Womack, J., delivered the opinion of the Court, in which Meyers, Price, Holland, Johnson, and Keasler, JJ., joined. McCormick, P.J., delivered a dissenting opinion in which Mansfield and Keller, JJ., joined.

In this case we reconsider the “Helms Rule” that, “Where a plea of guilty is voluntarily and understandingly made, all non-jurisdictional defects including claimed deprivation of federal due process are waived,” Helms v. State, 484 S.W.2d 924, 927 (Tex. Cr. App. 1972).

When the appellant got off a flight from Belize at Houston Intercontinental Airport, an immigration inspector decided that she should be excluded from entry into the United States. She was to be detained overnight and returned to Belize the following day. She was taken to the Liberty County jail, which had a contract with the Immigration and Naturalization Service to house detainees. When she was searched at the jail, cocaine was found taped to her legs.

The appellant was indicted for possession of cocaine in the amount of at least 200 grams but less than 400 grams. She moved to suppress the evidence of her possession of cocaine on the ground that it was obtained incident to an illegal arrest. The district court heard evidence on the motion and denied it. Immediately after that ruling the appellant waived trial by jury and pleaded guilty. There was no plea-bargain agreement between the appellant and the State. After preparation of a presentence investigation report, the court held a hearing on punishment and sentenced the appellant to ten years in prison.

The appellant asked the court of appeals to reverse her conviction because the trial court erred by denying her motion to suppress evidence. She also asked the court to overrule Helms. The court of appeals held that the appellant was precluded from appealing the trial court’s ruling on the motion to suppress because, in a case in which there was no plea-bargain agreement, the Helms Rule meant that such matters were waived. Young v. State, No. 09-95-212-CR, slip op. at 2–3 (Tex. App. — Beaumont April 22, 1996) (not designated for publication). The court held that it was not authorized to overrule Helms. Id. at 3. It suggested that the appellant should have pleaded not guilty to avoid the Helms Rule. Id. at 3–4.

We granted discretionary review on our own motion¹ and requested the parties to brief and argue the question, whether the Court should reconsider its decision in Helms.

The “Helms Rule” is a distortion of a rule that we imported from federal habeas corpus decisions. This federal rule was born at a time in which we found, as we said in Ex parte Young, 418 S.W.2d 824, 826 (Tex. Cr. App. 1967):

New concepts of the meaning of due process announced by the Supreme Court of the United States are binding on State as well as Federal Judges, and their duties and responsibilities in the administration of federal constitutional law are co-equal.
A judgment of conviction obtained in violation of due process of law is void for want of jurisdiction of the court to enter such judgment. Fay v. Noia, 372 U.S. 391 [(1963)].
Habeas corpus is an appropriate means by which relief from confinement under a void conviction may be obtained in the State as well as in the Federal Courts.

The first antecedents of the Helms Rule entered our jurisprudence as obiter dicta in Hoskins v. State, 425 S.W.2d 825 (Tex. Cr. App. 1968). Hoskins appealed from the revocation of his probation, claiming that insufficient evidence was entered to prove his guilt in the earlier proceeding at which he pleaded guilty and was granted probation. The Court held that it was well settled that Hoskins, having failed to appeal at the time of his original conviction, could not bring such a challenge after the revocation of probation. Then we added a reference to a rule that the United States Court of Appeals for the Fifth Circuit had developed in its habeas corpus cases from Texas:

With reference to appellant’s claim of deprivation of federal constitutional due process, attention is directed to Bee v. Beto, 384 F.2d 925, wherein the Fifth Circuit Court of Appeals held that a guilty plea entered by a Texas state defendant was conclusive as to the defendant’s guilt, admitted all facts charged in the indictment and waived all nonjurisdictional defects, citing White v. Beto, 367 F.2d 557; Law v. Beto, 370 F.2d 369 and Haynes v. United States, 372 F.2d 651.

Id. at 829–30.

In turn, the authority for all the decisions that we cited in Hoskins is another decision of the federal court, Busby v. Holman, 356 F.2d 75 (5th Cir. 1966).² Busby had been charged in Alabama with rape, which was a capital offense, and robbery. He had given a confession while he was in jail. His counsel and the prosecutor agreed that, if Busby would change his plea to guilty of rape, the prosecutor would recommend a life sentence and dismiss the robbery charge. Busby agreed to follow that procedure and pleaded guilty “voluntarily, intelligently and with full knowledge of the consequences.” Id. at 77. Later he sought habeas corpus relief in federal court on the ground that his conviction was invalid because his jail-house confession had been coerced and taken while he was without counsel. The court of appeals held:

There is no merit in this contention, even if we assume that the appellant’s confession was not voluntary and even if we assume further that he was required to be furnished with counsel when he was being interrogated even though he did not ask for such assistance. For the confession was not offered in evidence in view of the fact that the appellant pleaded guilty and the question of its legality is relevant in the present proceedings only to the extent that it may have affected the voluntary character of the appellant’s plea. It is settled by a host of authorities that a judgment on a plea of guilty which has been entered voluntarily on advice of counsel is not rendered invalid because the defendant had previously made a confession under circumstances which might have rendered it inadmissible in evidence if the defendant had pleaded not guilty and had gone to trial. This is so because the plea, if voluntarily and understandingly made, is conclusive as to the defendant’s guilt, admitting all the facts charged and waiving all non- jurisdictional defects in the prior proceedings against him. The judgment and sentence which follow a plea of guilty are based solely upon the plea and not upon any evidence which may have been acquired improperly by the prosecutor. Accordingly, a confession in the possession of the prosecutor which has been illegally obtained cannot be made the basis for a collateral attack upon a judgment of conviction entered upon a plea of guilty voluntarily and understandably made.

Ibid. (footnotes omitted).

The Supreme Court would soon agree with the Fifth Circuit’s reasoning. In McMann v. Richardson, 397 U.S. 759 (1970), state prisoners brought habeas corpus cases in federal court, alleging that their guilty pleas were motivated by involuntary confessions. The Court said:

A conviction after trial in which a coerced confession is introduced rests in part on the coerced confession, a constitutionally unacceptable basis for conviction. It is that conviction and the confession on which it rests that the defendant later attacks in collateral proceedings. The defendant who pleads guilty is in a different posture. He is convicted on his counseled admission in open court that he committed the crime charged against him. The prior confession is not the basis for the judgment, has never been offered in evidence at a trial, and may never be offered in evidence. …
What is at stake in this phase of the case is not the integrity of the state convictions obtained on guilty pleas, but whether, years later, defen dants must be permitted to withdraw their pleas, which were perfectly valid when made, and be given another choice between admitting their guilt and putting the State to its proof. … This would be an improvident invasion of the State’s interests in maintaining the finality of guilty-plea convictions that were valid under constitutional standards applicable at the time. It is no denigration of the right to trial to hold that when the defendant waives his state court remedies and admits his guilt, he does so under the law then existing; further, he assumes the risk of ordinary error in either his or his attorney’s assessment of the law and facts. Although he might have pleaded differently had later decided cases then been the law, he is bound by his plea and his conviction unless he can allege and prove serious derelictions on the part of counsel sufficient to show that his plea was not, after all, a knowing and intelligent act.

Id. at 773–74.

McMann was one of the Brady trilogy: three cases decided on the same day in which the Court held that, after the entry of a guilty plea which was otherwise voluntary and untainted by ineffective assistance of counsel, a defendant could not collaterally attack the judgment in federal court on a theory that the guilty plea was coerced because of constitutional violations that were not the basis of the judgment.³ A few years later in Tollett v. Henderson, 411 U.S. 258, 266 (1973), the Court “reaffirm[ed] the principle recognized in the Brady trilogy: a guilty plea represents a break in the chain of events which has preceded it in the criminal process. When a criminal defendant has solemnly admitted in open court that he is in fact guilty of the offense with which he is charged, he may not thereafter raise independent claims relating to the deprivation of constitutional rights that occurred prior to the entry of the guilty plea.”

Therefore the rule that we quoted in Hoskins, and which was validated by subsequent decisions of the Supreme Court, was the rule for habeas corpus attacks on a judgment that resulted from a guilty plea in which the unconstitutionally-obtained evidence was not the basis for the judgment. During the time that this rule filtered through the federal judicial system, we began to apply it to our appeals.

The first of our cases to have applied this rule to a contention that evidence was inadmissible in a guilty plea was Fierro v. State, 437 S.W.2d 833 (Tex. Cr. App. 1969). In that appeal from a conviction for possession of heroin, we said:

The three grounds of error set forth in appellant’s brief relate to the overruling of his motion to suppress the evidence obtained as the result of an illegal search and appellant’s alleged confession following such search, and the contention that excluding the fruits of the illegal search and seizure, the evidence is insufficient to support any conviction in this case.
A plea of guilty, if voluntarily and understandingly made, is conclusive as to the defendant's guilt and waives all non jurisdictional defects including claimed deprivation of federal constitutional due process. Hoskins v. State, Tex.Cr.App., 425 S.W.2d 825; Law v. Beto, 5 Cir., 370 F.2d 369, cert. denied, 389 U.S. 863; Litton v. Beto, 386 F.2d 820; Bee v. Beto, 384 F.2d 925.

Id. at 834.

Fierro was followed by two other appeals from guilty pleas in drug-possession cases, which we disposed of in like fashion.⁴ In the first of these appeals, Soto v. State, 456 S.W.2d 389, 390 (Tex. Cr. App. 1970), we said:

Appellant contends that the heroin was unlawfully obtained. We need not pass upon this contention, because, if a plea of guilty is voluntarily and understandingly made, it is conclusive as to the defendant’s guilt and waives all non-jurisdictional defects including claimed deprivation of federal constitutional due process. Fierro v. State, supra, and cases cited therein.

Then, in Helms, 484 S.W.2d at 926, we said:

Appellant contends that the court was in error in admitting evidence [of possession of marihuana] obtained as the result of an illegal search and seizure. Where a plea of guilty is voluntarily and understandingly made, all non-jurisdictional defects including claimed deprivation of federal due process are waived. Soto v. State, Tex.Cr.App., 456 S.W.2d 389; Fierro v. State, Tex.Cr.App., 437 S.W.2d 833. We perceive no error.

Thereafter the Helms Rule has been frequently applied, and occasionally criticized,⁵ but we have not reconsidered its premises or the full effect of the developments in the law that have followed it.

The rule of Hoskins, Fiero, and Soto, which ultimately was followed in the Brady trilogy, is significantly different from the Helms Rule. In the first three opinions we cited a federal rule that said “a guilty plea entered by a Texas state defendant was conclusive as to the defendant’s guilt.”⁶ The Helms Rule, “Where a plea of guilty is voluntarily and understandingly made, all non-jurisdictional defects including claimed deprivation of federal due process are waived,” omits the statement that the plea is conclusive as to guilt. This difference is the reason that the rule is called the Helms Rule, rather than the Soto Rule or the Fierro Rule or the Hoskins Rule. Helms was the first opinion in which the consequence of waiver was prescribed without some requirement that the plea be independent of preceding error or sufficient to support a judgment. The omission is very significant, for two reasons.

First, if the reason for the rule is that the plea of guilty is conclusive as to the defendant’s guilt, the rule would not justify forfeiture of claims of error that do not go to the question of guilt, such as denials of motions to dismiss because the penal statute was invalid⁷ or the period of limitation had expired.⁸

Second, if the reason for the rule is that the plea of guilty is conclusive as to the defendant’s guilt, the rule would not apply to a felony case in which a jury has been waived. Texas has a unique requirement that, if a jury trial has been waived, the judgment of guilt in a felony case must be supported by evidence even when a plea of guilty was entered.⁹ This was a deliberate choice that a plea of guilty not be conclusive.

The requirement of evidence was part of a 1931 act that amended a statute to permit a jury trial to be waived. Before 1931 the statute required a jury in every felony trial in Texas. In 1930 the Supreme Court held that the Sixth Amendment was not violated by the waiver of trial by jury in a criminal case in the federal courts. Patton v. United States, 281 U.S. 276. The Court also said that maintenance of the jury in criminal cases was so important that, “before any waiver can become effective, the consent of government counsel and the sanction of the court must be had, in addition to the express and intelligent consent of the defendant.” Id. at 312.¹⁰

Texas promptly amended its statute to permit the waiver of jury trial “in order to reduce the expense of law enforcement and to hasten the disposition of felony cases wherein pleas of guilty are entered.”¹¹ The amendment incorporated the Patton require ment that the defendant’s waiver must be consented to by the prosecutor and approved by the court.¹²

The requirement of evidence showing guilt was not based on any constitutional requirement. So far as the Constitution of the United States is concerned, a voluntary and knowing plea of guilty is a sufficient basis for a judgment of guilt.¹³ The 1931 statute embodies a legislative policy. According to one judge, “Obviously the legislature had a good reason for making that requirement [of evidence], that reason being that it did not want any man whom the state could not and did not prove guilty of the crime charged sent to the penitentiary upon his plea of guilty before a trial court.” Braggs v. State, 169 Tex. Cr. 405, 407, 334 S.W.2d 793, 794 (1960) (opinion of Davidson, J.).

The Helms Rule, therefore, imposes on a guilty plea the procedural consequence that was established in the line of federal cases from which it is descended¹⁴ — a knowing and voluntary plea of guilty waives claims of errors that preceded the plea. But it omits the rationale of the federal decisions, which is that a valid plea of guilty has this consequence because it is independent of such errors, and is sufficient to support the judgment of conviction.¹⁵ When the Helms Rule is applied to foreclose appellate review of a judgment that was not independent of an antecedent error, or a judgment that was based in part on inadmissible evidence to which proper objection was made, the consequence is not justified by the rationale of the rule. To be justified by its premises and consistent with its precedents, a rule of waiver would be imposed on pleas of guilty (or nolo contendere) only to the extent that the resulting judgment of conviction was independent of the error being raised on appeal.¹⁶

In Hoskins, Fiero, Soto, and Helms, we also passed over the difference between a direct appeal in state court and a collateral attack in federal court.

The distinction was made in the cases that we cited in our earliest opinion, Hoskins. Three of the cases were federal habeas corpus attacks on judgments that resulted from guilty pleas in Texas courts, and in which the prisoners complained of constitutional violations that occurred before they pleaded guilty. The federal courts applied the rule of waiver which we quoted to the three habeas corpus applicants, who were held to have waived their constitutional complaints. The fourth case, Haynes v. United States, 372 F.2d 651 (5th Cir. 1967), was a direct appeal of a pre-trial ruling after a guilty plea in federal court. Haynes was allowed to present his point of error on appeal. The rule of waiver was quoted in Haynes, but it was not applied because the court went on to hold that a guilty plea does not necessarily foreclose appeal:

A guilty plea is a waiver of all nonjurisdictional defects and defenses and admits the facts charged, White v. Beto, 5 Cir., 1966, 367 F.2d 557; Law v. Beto, 5 Cir., 1966, 370 F.2d 369. Where, prior to his guilty plea, a defendant appropriately raises the unconstitutionality of the applicable statute, an appeal, directed to that issue, is not foreclosed, Ex Parte Siebold, 100 U.S. 371 (1879); Rice v. United States, 5 Cir., 1929, 30 F.2d 681; United States v. Ury, 2 Cir., 1939, 106 F.2d 28, 124 A.L.R. 569.

Id. at 652. Far from being waived, the pre-trial ruling was ultimately held to be error. See Haynes v. United States, 390 U.S. 85 (1968) (proper claim of the privilege against self-incrimination provided a full defense to any prosecution under 26 U.S.C. § 5841 for failure to register a firearm or under § 5851 for possession of an unregistered firearm). So it is certainly permissible for appeal to be taken from a pre-trial ruling that is followed by a guilty plea.

The procedure that makes such an appeal possible is a “conditional plea” of guilty, by which a plea of guilty is “conditioned on” the right to appeal a pre-trial ruling. A conditional plea of guilty is not a waiver of the right to contest the admissibility of any evidence the State might have offered against the defendant. This procedure was expressly recognized in the very line of cases on which the Helms Rule was supposedly based.¹⁷ Such conditional pleas are permitted in federal courts¹⁸and in some states.¹⁹

Before 1966 there was little or no possibility of a conditional appeal in a Texas court because our law did not provide for a pre-trial hearing to resolve such questions as the admissibility of evidence. The pre-trial hearing and the motion to suppress evidence were authorized by statute by the enactment of article 28.01 of the Code of Criminal Procedure when the Code was recodified in 1965.²⁰ The chairman of the drafting committee and two jurists who would become presiding judges of the Court of Criminal Appeals remarked on the novelty of these procedures and their value as time-saving devices in the trial of the case.²¹ Their comments did not mention the possibility that trials could be obviated entirely if the pre-trial ruling on a motion to suppress evidence could be appealed after a conditional plea of guilty.

In the first attempt to appeal a pre-trial ruling by way of a conditional plea under the 1965 Code revisions, the defendant in a heroin-possession case changed his plea to nolo contendere after the trial court overruled his motion to suppress the evidence. The trial court told the defendant his plea of nolo contendere “would protect him on his motion to suppress … [and] retain any rights he has on this constitutional question.” Chavarria v. State, 425 S.W.2d 822, 823 (Tex. Cr. App. 1968). This Court pointed out that “the legal effect of a plea of nolo contendere is the same as a plea of guilty insofar as the criminal prosecution is concerned.” Ibid. We said, “The judgment entered upon such plea demonstrated the correctness of such holding,” since the judgment said in one place that the plea was nolo contendere and in another that it was “Guilty.” Ibid. Then we concluded, “Under the record, the trial court was in error in accepting the plea of nolo contendere.” Ibid. This holding disposed of any misconception that the availability of a conditional plea turned on whether the plea was guilty or nolo contendere. But it did not address the underlying issue: whether the new pre-trial statute authorized a conditional plea. “Strikingly similar” facts led to the same result on the same reasoning in Killebrew v. State, 464 S.W.2d 838, 839 (Tex. Cr. App. 1971).

Then an appeal on a conditional plea of guilty, not nolo contendere, reached us. We asked, “Did the appellant waive any claimed error when he entered a plea of guilty?” Utsman v. State, 485 S.W.2d 573, 574 (Tex. Cr. App. 1972). An opinion for a narrowly divided court quoted the rule of waiver as it appeared in such cases as Fierro. We said, “The Supreme Court of the United States held that constitutional rights were waived when a defendant voluntarily enters a plea of guilty. See McMann v. Richardson, 397 U.S. 579.” Ibid. We did not mention the exception for conditional pleas which was specifically recognized in McMann.²² Then we concluded:

A trial court in Texas may not accept a plea of guilty or nolo contendere by a defendant with the understanding that he may preserve his right to appeal an adverse ruling. Killebrew v. State, Tex. Cr. App., 464 S.W.2d 838, and Chavarria v. State, Tex. Cr. App., 425 S.W.2d 822. To enter a plea of guilty one must waive such rights.

Utsman, 485 S.W.2d at 575. As we have seen, Chavarria and Killebrew contained no such holding about a conditional plea of guilty; they merely held that a plea of nolo contendere gave no greater right to appeal than a plea of guilty. Our leading decision on the availability of a conditional plea thus rests on precedents that do not support the holding, and it gave no consideration to whether the enactment of the pre-trial statute in 1965 changed the law in this regard.

During the same period of time, in two other opinions in which appellants who pleaded guilty complained of pre-trial rulings, we disposed of the points by citing McMann and the rest of the Brady trilogy of cases²³ as authority for a rule of waiver. There was no discussion of whether an appeal after a conditional plea was available. See Andrade v. State, 470 S.W.2d 194 (Tex. Cr. App. 1971); Gonzales v. State, 458 S.W.2d 926 (Tex. Cr. App. 1970).

We have stated that the Helms Rule of waiver prevented a conditional plea of guilty.²⁴ In light of the cases we have discussed above, a more complete statement might be that a conditional plea of guilty was prevented by a conflation of the Helms Rule and our decisions that such a procedure was not authorized by Texas law.

In a judicial system that does not permit a conditional plea of guilty, “a defendant who has lost one or more pre-trial motions will often go through an entire trial simply to preserve the pre-trial issues for later appellate review. This results in a waste of prosecutorial and judicial resources, and causes delay in the trial of other cases.”²⁵ Insofar as the Helms Rule was used to prevent conditional pleas, it caused these evils. “[T]he Helms rule discouraged guilty pleas, and caused a defendant, who wanted to preserve his appellate issues, to force the State to a full trial on the merits. … Apparently this cost the State a lot of money.”²⁶

In 1977 an act of the legislature recognized a conditional plea of guilty. The act amended Article 44.02, which had previously read, “A defendant in any criminal action has the right of appeal under the rules hereinafter prescribed.” The amendment added a proviso:

provided, however, before the defendant who has been convicted upon either his plea of guilty or plea of nolo contendere before the court and the court, upon the election of the defendant, assesses punishment and the punishment does not exceed the punishment recommended by the prosecu tor and agreed to by the defendant and his attorney may prosecute his appeal, he must have permission of the trial court, except on those matters which have been raised by written motion filed prior to trial.²⁷

The main thrust of the 1977 amendment was to eliminate appeals where the defendant had entered a plea of guilty or nolo contendere before the court as a result of a plea bargain and the punishment assessed did not exceed that agreed upon.²⁸ The same legislature enacted another amendment to curtail the right to bail pending appeal.²⁹ Taken together, these two acts were aimed at eliminating, or reducing, the ability of plea- bargaining defendants to delay the execution of their sentences by taking meritless appeals (known colloquially as “street” appeals which were decided by “windy” opinions).

By recognizing that even plea-bargaining defendants could appeal rulings on written, pre-trial motions after a plea of guilty, the proviso to Article 44.04 also had the purposes of encouraging guilty pleas and discouraging the trial of cases for the mere reason of preserving an issue for appeal.³⁰

As construed by this Court, the 1977 proviso authorized such conditional appeals only in plea-bargained cases.³¹ It therefore could accomplish these purposes only in part, since a defendant who had no plea-bargain agreement with the State was still governed by the Helms Rule, and could preserve issues for appeal only by pleading not guilty.

The appellant in this case is such a defendant, and we must decide whether the Helms Rule should continue to operate on her appeal.

As we have said, the Helms Rule is not justified by its premises or its precedents. It has operated to deny the full benefit of the pre-trial hearing which was authorized in 1965. Largely abrogated by an act of the legislature, its continued existence is fundamentally at odds with the public policy that is expressed in that act: to increase efficiency and decrease costs by encouraging conditional pleas of guilty and discouraging trials that have only the purpose of preserving the ability to appeal issues that were fully resolved before the trial. This Court agrees with this policy. The Helms Rule shall no longer be enforced in the terms in which it was stated in 1972.

Whether entered with or without an agreed recommendation of punishment by the State, a valid plea of guilty or nolo contendere “waives” or forfeits the right to appeal a claim of error only when the judgment of guilt was rendered independent of, and is not supported by, the error.³² In addition, if the appeal is from a judgment rendered on the defendant’s plea of guilty or nolo contendere under Code of Criminal Procedure article 1.15, and the punishment assessed did not exceed the punishment recommended by the prosecutor and agreed to by the defendant, the substance of the appeal must have been raised by written motion and ruled on before trial (unless the appeal is for a jurisdictional defect or the trial court granted permission to appeal).³³

In this case the judgment of guilt is not independent of the trial court’s ruling on the motion to suppress the evidence of the offense, and the judgment would not be supported without that evidence. The court of appeals, therefore, must consider the appellant’s point of error which raises the correctness of that ruling.

Reversed and remanded.

En banc.
Delivered January 5, 2000.
¹See Tex. R. App. P. 67.
²Bee, Law, and Haynes, all rely on White, the sole authority for which is Busby. See White, 367 F.2d at 559.
³Brady v. United States, 397 U.S. 742 (1970); McMann v. Richardson, 397 U.S. 763 (1970); Parker v. North Carolina, 397 U.S. 790 (1970).
⁴In a third case, Glenn v. State, 442 S.W.2d 360, 361 (Tex. Cr. App. 1969), Hoskins was quoted, but in that case the defendant had pleaded guilty before the trial court made any decision on his pre-trial motion to suppress evidence.
⁵See Judge Clinton’s dissents in Dees v. State, 676 S.W.2d 403, 406 (Tex. Cr. App. 1984), and King v. State, 687 S.W.2d 762, 766 (Tex. Cr. App. 1985).
⁶Hoskins, 425 S.W.2d at 829–30. See Fierro, 437 S.W.2d at 834 (“A plea of guilty, if voluntarily and understandingly made, is conclusive as to the defendant's guilt”); Soto, 456 S.W.2d at 390 (“if a plea of guilty is voluntarily and understandingly made, it is conclusive as to the defendant’s guilt”).
⁷See, e.g., Haynes v. United States, 390 U.S. 85 (1968).
⁸See, e.g., Jaben v. United States, 381 U.S. 214 (1965).
⁹Tex. Code Crim. Proc. art. 1.15 (emphasis added):

No person can be convicted of a felony except upon the verdict of a jury duly rendered and recorded, unless the defendant, upon entering a plea, has in open court in person waived his right of trial by jury in writing in accordance with Articles 1.13 and 1.14; provided, however, that it shall be necessary for the state to introduce evidence into the record showing the guilt of the defendant and said evidence shall be accepted by the court as the basis for its judgment and in no event shall a person charged be convicted upon his plea without sufficient evidence to support the same. The evidence may be stipulated if the defendant in such case consents in writing, in open court, to waive the appearance, confrontation, and cross-examination of witnesses, and further consents either to an oral stipulation of the evidence and testimony or to the introduction of testimony by affidavits, written statements of witnesses, and any other documentary evidence in support of the judgment of the court. Such waiver and consent must be approved by the court in writing, and be filed in the file of the papers of the cause.

It is settled by a host of authorities that a judgment on a plea of guilty which has been entered voluntarily on advice of counsel is not rendered invalid because the defendant had previously made a confession under circumstances which might have rendered it inadmissible in evidence if the defendant had pleaded not guilty and had gone to trial. This is so because the plea, if voluntarily and understandingly made, is conclusive as to the defendant’s guilt, admitting all the facts charged and waiving all non-jurisdictional defects in the prior proceedings against him. The judgment and sentence which follow a plea of guilty are based solely upon the plea and not upon any evidence which may have been acquired improperly by the prosecutor.

Busby, 356 F.2d at 77.

The defendant who pleads guilty is … convicted on his counseled admission in open court that he committed the crime charged against him. The prior confession is not the basis for the judgment, has never been offered in evidence at a trial, and may never be offered in evidence.

McMann, 397 U.S. at 773.

[A] guilty plea represents a break in the chain of events which has preceded it in the criminal process. When a criminal defendant has solemnly admitted in open court that he is in fact guilty of the offense with which he is charged, he may not thereafter raise independent claims relating to the deprivation of constitutional rights that occurred prior to the entry of the guilty plea.

Tollett, 411 U.S. at 266.
¹⁶When this Court has been unconstrained by the Helms Rule, our decisions have broadened the availability of the conditional-appeal procedure.

In Isam v. State, [582 S.W.2d 441 (Tex. Cr. App. 1979)], this Court addressed the issue of proper application of former Article 44.02, V.A.C.C.P. to pleas of guilty or nolo contendere in misdemeanor prosecutions. The Court held that the rule announced in Brown v. State, 507 S.W.2d 235 (Tex. Cr. App.1974), that such pleas admit every element of the offense charged, “does not apply to an appeal from a misdemeanor guilty plea that challenges the ruling on ... a pretrial motion.” 582 S.W.2d at 444. A contrary holding, we observed, would have “thwarted” one of the legislative purposes underlying Article 44.02, [see infra, p. 19] viz: to encourage guilty pleas in cases where the only contested issue is some matter such as the lawfulness of a search or voluntariness of a confession, see Ferguson v. State, 571 S.W.2d 908 (Tex. Cr. App.1978), in that application of the rule in Brown, supra, would defeat the necessity for an appellate determination of such issues. Isam, at 443. Thus, much as we have lately held that a judicial confession given in support of a plea of guilty or nolo contendere in a felony prosecution will not, standing alone, obviate substantive treatment of the merits of a pre-trial motion to suppress, Morgan v. State, 688 S.W.2d 504 (Tex. Cr. App.1985), neither will such a plea in a misdemeanor prosecution by itself defeat the defendant's appeal merely because it has been held for other purposes to admit every element of the offense charged.

Kraft v. State, 762 S.W.2d 612, 613 (Tex. Cr. App. 1988).
¹⁷In addition to Haynes, supra, the Supreme Court adverted to the conditional plea in McMann. “[T]he plea is also a waiver of trial — and unless the applicable law otherwise provides, [note 11] a waiver of the right to contest the admissibility of any evidence the State might have offered against the defendant.” Id., 397 U.S. at 766 (1970). In the footnote, the Court observed that New York adopted a procedure for a conditional plea after the petitioners pleaded guilty. See ibid. n.11.
¹⁸“Conditional Pleas. With the approval of the court and the consent of the government, a defendant may enter a conditional plea of guilty or nolo contendere, reserving in writing the right, on appeal from the judgment, to review of the adverse determination of any specified pretrial motion. A defendant who prevails on appeal shall be allowed to withdraw the plea.” Fed. R. Crim. P. 11(a)(2).
¹⁹See generally Lefkowitz v. Newsome, 420 U.S. 283 (1975).
²⁰“Act establishing and adopting a Code of Criminal Procedure for the State of Texas,” 59th Leg., R.S., ch. 722, § 1, art. 28.01, 1965 Tex. Gen. Laws , vol. 2, p. 317, 432.
²¹Fred Erisman, Introduction to 1965 Revision, 1 Vernon’s Annotated Code of Criminal Procedure xi, xix (1966) (“In an effort to avoid delays that could have been anticipated provisions are made for hearings on … motions to suppress evidence”; W.A. Morrison, Interpretive Commentary, 2 Vernon’s Annotated Code of Criminal Procedure 340 (1966) (“In order to expedite trials and save waiting time for jurors, the Committee provided for a pre-trial hearing to be had prior to the day set for trial”); John F. Onion, Jr., Special Commentary, id. at 340–41 (“An innovation in Texas criminal procedure will be pre-trial hearings. … Under the old practice such matters and motions were not required to be presented until the actual trial date, which caused jurors and witnesses to be kept waiting (sometimes for days) while such motions were heard”).
²²See supra note 16.
²³See supra note 3.
²⁴“Before 1977, a defendant in a criminal action had a general right to appeal anything. Article 44.02, V.A.C.C.P., as enacted in 1925; former Article 813, C.C.P. 1925. However, as a matter of decisional law, we held a guilty plea waived all nonjurisdictional defects in the prior proceedings; this rule is commonly known as the Helms rule.” Lyon v. State, 872 S.W.2d 732, 734 (Tex. Cr. App. 1994) (footnotes and citations omitted).
²⁵Fed. R. Crim. P. 11(a), Advisory Committee Note (1983 amendment).
²⁶Lyon, 872 S.W.2d at 734.
²⁷Act of June 10, 1977, 65th Leg., R.S., ch. 351, § 1, 1977 Tex. Gen. Laws 940. repealed by Act of June 14, 1985, 69th Leg., R.S., ch. 685, §§ 1 & 4, 1985 Tex. Gen. Laws 2472 (authorizing Court of Criminal Appeals to promulgate rules of procedure and conditionally repealing articles of Code of Criminal Procedure). The proviso was repealed simultaneously with the effective date of former Rule of Appellate Procedure 40(b)(1), the predecessor of Texas Rule of Appellate Procedure 25.2(b).
²⁸ Morris v. State, 749 S.W.2d 772, 774 (Tex. Cr. App. 1986).
²⁹Before 1977, all misdemeanants and all felons whose sentences did not exceed 15 years were entitled to bail. See Code of Criminal Procedure Act of 1965, 59th Leg., R.S., ch. 722, § 1, art. 44.04(a), 1965 Tex. Gen. Laws vol. 2, p. 317, 511. The 1977 amendment authorized trial courts to deny bail to felons whose sentences did not exceed 15 years, if there was good cause to believe that they would not appear when the convictions became final or that they would commit other offenses while on bail. See Act of May 25, 1977, 65th Leg., R.S., ch. 234, § 1, 1977 Tex. Gen. Laws 636. The act also authorized the courts to impose conditions on bail. Ibid.
³⁰See Lyon, 872 S.W.2d at 735 (amendment was made “in order ‘to conserve judicial resources by encouraging guilty pleas’ and to prevent ‘windy’ appeals”)..
³¹Prochaska v. State, 587 S.W.2d 726 (Tex. Cr. App. 1979). Accord, e.g., Cleveland v. State, 588 S.W.2d 942, 944 (Tex. Cr. App. 1988) (alternative holding). This construction of the statute was not inevitable. After the 1977 amendment, Article 44.02 had three clauses:

(1) the original statute, which said that defendants had the right to appeal;
(2) an exception to the first clause, which said that plea-bargainers must have permission of the trial court to appeal, and
(3) an exception to the exception, which allowed even plea-bargainers the right to appeal rulings on written, pre-trial motions.