What Is a Motion to Suppress Evidence in a Texas Criminal Case?

The Statute: Code of Criminal Procedure Article 38.23

Texas has its own statutory exclusionary rule, and it is broader than the federal one. Article 38.23(a) provides that no evidence obtained by an officer or any other person in violation of the Constitution or laws of Texas or of the United States may be admitted against the accused at trial. Two features make the Texas rule powerful: it reaches violations by private citizens, not just police, and it covers violations of statutes, not only the Constitution. Article 38.23(a) also requires that when the evidence raises a factual dispute about how something was obtained, the jury be instructed to disregard that evidence if it believes, or has a reasonable doubt, that it was obtained illegally.

Article 38.23(b) carves out a narrow good-faith exception: evidence is admissible if a law-enforcement officer obtained it in objective good-faith reliance on a warrant issued by a neutral magistrate based on probable cause. Texas's good-faith exception is tied to a warrant, which makes it narrower than the broader federal good-faith doctrine; Texas has not adopted the federal United States v. Leon rule that can excuse some warrantless conduct.

Article 38.23 works alongside the constitutional guarantees it enforces: the Fourth Amendment (freedom from unreasonable searches and seizures, mirrored by Article I, Section 9 of the Texas Constitution), the Fifth Amendment (protection against compelled self-incrimination, the basis for Miranda warnings), and the Sixth Amendment (right to counsel, which attaches once formal adversarial proceedings begin). Confessions and statements have their own Texas statute, Article 38.22, which requires specific warnings, a knowing and voluntary waiver, and, for oral statements made during custodial interrogation, an electronic recording. Blood draws in DWI cases are governed by Transportation Code Sections 724.011 and 724.012 (implied consent and specimen collection).

What It Means in Practice

The Constitution does not enforce itself. A motion to suppress is the tool your defense lawyer uses to hold the State to the rules, and it is filed and argued before trial, usually as a pretrial motion the judge hears outside the jury's presence. Code of Criminal Procedure Article 28.01, Section 1(6) expressly lists motions to suppress evidence among the matters a court may set for a pretrial hearing; the specific setting and notice procedures can vary from court to court.

Most suppression fights start with a traffic stop or detention. Police need reasonable suspicion (specific, articulable facts pointing to criminal activity) to pull you over or detain you. If the stop was a hunch, everything discovered afterward (the odor, the field sobriety tests, the drugs in the console) may fall as "fruit of the poisonous tree."

Warrantless searches are the next battleground. A search without a warrant is presumptively unreasonable, so the State must fit it into a recognized exception: consent, plain view, the automobile exception, exigent circumstances, or a search incident to a lawful arrest. If none applies, the evidence goes out.

When there was a warrant, the fight shifts to whether it was valid: whether the affidavit established probable cause, whether it was stale, whether it described the place and items with enough particularity, or whether the officer misled the magistrate.

Statements and confessions are frequently suppressible. If you were in custody and interrogated without proper Miranda and Article 38.22 warnings, if your waiver was not voluntary, or if a custodial oral statement was never recorded, the statement may be inadmissible.

Finally, illegal blood draws are a major DWI issue. In State v. Villarreal, 475 S.W.3d 784 (Tex. Crim. App. 2014), the Texas Court of Criminal Appeals held that the implied-consent and mandatory-blood-draw statutes do not, by themselves, authorize a warrantless nonconsensual blood draw; police generally need a warrant, valid consent, or genuine exigent circumstances. That holding remains consistent with the U.S. Supreme Court's later decisions in Birchfield v. North Dakota (2016) and Mitchell v. Wisconsin (2019).

The hearing and the burden shift

At the suppression hearing, the burden moves in steps. You carry the initial burden, but for a warrantless search or seizure, you meet it simply by establishing that the police acted without a warrant. The burden then shifts to the State to prove the search or seizure was reasonable, either because a warrant existed or because a recognized exception applied. The prosecutor must produce the officers and the facts; you get to cross-examine them. On one recurring question, the voluntariness of consent to search, Texas requires the State to prove consent by clear and convincing evidence, a higher bar than the federal preponderance standard (see Meekins v. State). Reasonable suspicion and probable cause, by contrast, are judged on the totality of the circumstances.

Common Grounds for Suppression at a Glance

Common Misconceptions

How It Affects Your Case

A motion to suppress is one of the most valuable tools in Texas criminal defense because it attacks the case at its foundation. Prosecutors build their theory on a small number of key pieces of evidence. Knock out the stop, and the DWI evidence that followed it can go with it. Knock out the search, and the contraband disappears. Knock out the statement, and the "admission" the State was counting on is gone.

That leverage changes the negotiation. Even a filed motion with real legal teeth can move a prosecutor toward a reduction or dismissal before the hearing, because the State does not want to risk losing its evidence in open court. And when the motion is granted, the practical effect can be the end of the prosecution.

Winning suppression is never guaranteed; it turns on the specific facts, the credibility of the officers, and the controlling law, and outcomes vary from case to case. What a careful defense lawyer can do is examine how your evidence was gathered, identify any constitutional or statutory violations in that process, and press the State to answer for them. At Lance Kennedy Law, that review of the stop, the search, the warrant, the statements, and any blood draw is part of how we work up every case we take.

Talk to a Texas Criminal Defense Lawyer

Call (737) 324-7540 for a free, confidential case review. Lance Kennedy Law defends criminal and DWI cases in Austin and San Antonio. We will review how the evidence against you was obtained and whether a motion to suppress can help. Request your free case review.

Related Reading

• Reasonable Suspicion and Traffic Stops in Texas
• Your Miranda Rights and Article 38.22 Statements
• Refusing a DWI Blood or Breath Test in Texas
• Texas DWI Defense
• Texas Criminal Defense