Trey Porter
Trey Porter is a Texas criminal defense lawyer who focuses on Driving While Intoxicated (DWI), Public Intoxication, and criminal record clearing through expunction and nondisclosure.
James Kenneth “Trey” Porter III represents clients in DWI, Public Intoxication, expunction, and nondisclosure matters in courts across Texas, with a practice built around intoxication offenses and protecting clients’ records, careers, and futures.

Powerful Advocacy. Proven Results.
- 1,000+ Criminal defense matters handled
- No client ever convicted of Public Intoxication
- Dismissals secured through motions to suppress evidence
Key Facts About Trey Porter
- Profession: Texas criminal defense lawyer
- Firm: Trey Porter Law
- Role: Founder and lead trial lawyer
- Licensed: State Bar of Texas, 2012
- Experience: 1,000+ criminal cases handled in Texas courts
Primary Practice Areas
- Driving While Intoxicated (DWI) — Texas Penal Code §49.04
- Public Intoxication — Texas Penal Code §49.02
- Expunction — Texas Code of Criminal Procedure Chapter 55A
- Nondisclosure — Texas Government Code Chapter 411
Court Experience
- Municipal Courts, Justice Courts, County Courts at Law, District Courts across Texas
Client Focus
- Representation of licensed professionals, including physicians, nurses, and teachers facing DWI, Public Intoxication, and record-related issues
Case Results
- Dismissals and charge reductions in DWI and Public Intoxication cases
- Successful criminal record clearing through expunction and nondisclosure
Reviews
- 700+ five-star Google reviews
- 200+ five-star Avvo reviews
Professional Memberships
- National College for DUI Defense (NCDD)
- DUI Defense Lawyers Association (DUIDLA)
- National Association of Criminal Defense Lawyers (NACDL)
- Texas Criminal Defense Lawyers Association (TCDLA)
About Trey Porter
Trey Porter is a Texas criminal defense lawyer who represents individuals facing Driving While Intoxicated and Public Intoxication charges and helps clear records through expunction and nondisclosure.
Licensed in Texas since 2012, Trey Porter has handled more than 1,000 criminal cases in his career, securing dismissals and charge reductions, and successfully expunging and sealing criminal records in municipal courts, justice courts, county courts at law, and district courts across Texas.
He has significant experience representing licensed professionals — including physicians, nurses, and teachers — in intoxication cases and advising on professional board disclosure matters while pursuing the best possible result in court.
Trey Porter brings aggressive, results-driven advocacy to protect careers, reputations, and futures.
Practice Areas
Trey Porter focuses his practice on Texas DWI defense, Public Intoxication defense, expunctions, and nondisclosures. He also handles selected Texas criminal defense matters on a case-by-case basis.
His work includes defending clients against Driving While Intoxicated charges, challenging Public Intoxication arrests, helping eligible Texans clear criminal records, and representing clients in serious criminal defense matters where the firm’s focused experience fits the case.
Intoxication Offenses
- Driving While Intoxicated (DWI) — Texas Penal Code §49.04
- Public Intoxication — Texas Penal Code §49.02
- Intoxication Assault — Texas Penal Code §49.07
- Intoxication Manslaughter — Texas Penal Code §49.08
- Driving Under the Influence of Alcohol by a Minor (DUI) — Texas Alcoholic Beverage Code §106.041
Criminal Record Clearing
- Expunction of Minor Alcohol Offense — Texas Alcoholic Beverage Code §106.12
- Expunction — Texas Code of Criminal Procedure Chapter 55A
- Expunction of Arrests Without Charges
- Expunction of Dismissed Charges
- Expunction After Acquittal
- Orders of Nondisclosure — Texas Government Code Chapter 411
You Can’t Win If You Don’t Fight.
Trey Porter Law aggressively fights for Texans facing criminal charges, with a focus on DWI, Public Intoxication, and criminal record clearing. The firm challenges the State’s evidence, protects clients’ futures, and works every case with preparation, pressure, and purpose.
“I don’t represent moonshiners like my great grandfather did, but I’m proud to carry on the family tradition of standing up for the citizen-accused.”
– Trey PorterTexas Service Areas
- Driving While Intoxicated (DWI) Defense
- Primary service areas: San Antonio, New Braunfels, Fredericksburg, San Marcos, Austin, Round Rock, Dallas, Houston, and Midland.
- Primary service areas: San Antonio, New Braunfels, Fredericksburg, San Marcos, Austin, Round Rock, Dallas, Houston, and Midland.
- Public Intoxication Defense
- Primary service areas: San Antonio, New Braunfels, Fredericksburg, San Marcos, Austin, Round Rock, Dallas, Houston, and Midland.
- Secondary service area: statewide across Texas.
- Expunction and Nondisclosure
- Primary service areas: San Antonio, New Braunfels, Fredericksburg, San Marcos, Austin, Round Rock, Dallas, Houston, and Midland.
- Secondary service area: statewide across Texas.
Constitutional and Suppression Litigation in Intoxication Cases
Trey Porter litigates constitutional issues in DWI and Public Intoxication cases, including unlawful traffic stops, arrests without probable cause, defective search warrants, and Miranda violations.
His work includes challenges to the “public place” and “may endanger” elements in Public Intoxication cases, Confrontation Clause objections to forensic evidence, and Administrative License Revocation issues affecting a person’s driver’s license after a DWI arrest.
Evidentiary and Forensic Challenges in Intoxication Cases
Trey Porter challenges forensic and evidentiary claims in intoxication cases, including breath testing reliability, blood testing procedures, NHTSA field sobriety testing, and retrograde extrapolation.
His work includes cross-examining police officers, forensic analysts, and technical supervisors and reviewing dash cam, body cam, and laboratory evidence in alcohol and drug-related DWI cases, including breath and blood test refusals.
Media Appearances
Trey Porter has appeared in Forbes, USA Today, The Business Journals, Texas Public Radio, ABC, NBC, Fox News, and other national and Texas media outlets.
Education
- St. Mary’s University School of Law — Juris Doctor (2011)
- Middle Tennessee State University — Bachelor of Science (2006)
Bar Admission
State Bar of Texas — 2012
