Knowledge Vault Blog

The Knowledge Vault Blog

Forensic Science. Criminal Defense Strategy. The Law Behind the Law.

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Welcome to the Knowledge Vault Blog — where the attorneys, scientists, and forensic experts at Deandra Grant Law share what we know. This is not a typical law firm blog. It is a research library built by practitioners who teach forensic science courses, grade certification exams, and testify as experts in courtrooms across Texas.

Our Managing Partner, Deandra Grant, holds a Master’s Degree in Pharmaceutical Science, teaches the ACS-CHAL Forensic Lawyer-Scientist courses at Axion Analytical Labs, serves on the faculty of the Borkenstein Drug Course at Indiana University, and chairs the DUI Defense Lawyers Association’s national Board Certification program. She is a member of the American Academy of Forensic Sciences, the American Chemical Society, the Society of Toxicology, and the International Association of Forensic Science Consultants. Partner Douglas Huff brings ACS-CHAL credentials and Garrett Discovery digital forensics training. Federal Defense Attorney James Lee Bright contributes decades of experience in federal criminal practice.

Inside the Knowledge Vault you will find:

Hot Takes – The latest on high profile trials, changes to the law, rulings by the Supreme Court and forensic science news.

Forensic Science & DWI Defense — Deep analyses of blood and breath testing science, GC-FID instrument calibration, partition ratio variability, in vitro fermentation, retrograde extrapolation, and the pharmacokinetics of drug impairment. Written by attorneys who don’t just challenge the science — they teach it.

Field Sobriety Test Analysis — The history, validation research, and scientific limitations of the NHTSA Standardized Field Sobriety Tests, written by a certified SFST Instructor who was the first attorney in Texas to pass the Forensic Sobriety Assessment Certification exam.

Federal Criminal Defense — Guides to federal conspiracy, sentencing guidelines, proffer sessions, grand jury investigations, asset forfeiture, and the critical differences between state and federal prosecution. Written by attorneys who practice in federal courts across Texas.

Digital Forensics & Electronic Evidence — How cell phone location data, social media records, body cameras, call detail records, and computer forensics affect criminal cases — and how to challenge them.

Sex Crime Defense — Outcry witnesses, SANE exams, DNA evidence challenges, false accusations, registry implications, and defense strategies for the most serious allegations.

Emerging Science & Policy — Roadside cannabis testing technology, marijuana rescheduling and federal sentencing, Canadian travel after DWI, and the evolving intersection of science, law, and public policy.

Texas Criminal Courts & Local Practice — County-by-county courts guides, DA office profiles, courthouse walkthroughs, and city-specific enforcement patterns across Dallas, Collin, Denton, Tarrant, Rockwall, and McLennan counties.

Every article in the Knowledge Vault is written or reviewed by the attorneys at Deandra Grant Law.

We don’t publish filler. We publish the analysis we wish existed when we were building our own expertise and the information our clients deserve to have access to before they walk into a courtroom.

If you are facing criminal charges or a DWI in Texas and want to speak with the attorneys behind this work, call (214) 225-7117 or visit our Schedule an Appointment page for a free, confidential consultation.

Knowledge Vault Blog

Who Polices the Bench? Inside the Texas State Commission on Judicial Conduct

Gavel of Shame Intro

The foundational explainer for the series” who the Commission is, what it can and cannot do, who sits on it, what each level of discipline means, and how Proposition 12 changed the rules in 2026   THE QUICK ANSWER The State Commission on Judicial Conduct (SCJC) is the independent Texas agency that investigates complaints of […]

When the Courthouse Itself Compromises a Fair Trial: What the Murdaugh Reversal Means for Every Defendant

Murdaugh

On May 13, 2026, the South Carolina Supreme Court unanimously vacated Alex Murdaugh’s 2023 double-murder conviction and ordered a new trial. The 5-0 opinion did not reach the merits of the murder case. It reached the conduct of Mary Rebecca “Becky” Hill, the Colleton County Clerk of Court who served during the six-week trial. The […]

Ask Deandra: Do I Have to Take a Field Sobriety Test in Texas?

012 – SFSTs

The question: Do I have to take a field sobriety test in Texas? The short answer: No. Field sobriety tests are voluntary in Texas. You are not required to perform them, you cannot be charged with a separate offense for refusing, and there is no automatic license suspension for declining (unlike the breath or blood […]

Ask Deandra: What Should I Do If I’m Pulled Over and the Officer Thinks I’m Drunk?

011 – Pulled Over

The question: What should I do if I’m pulled over and the officer thinks I’m drunk? The short answer: Be polite. Pull over safely. Provide your driver’s license, registration, and insurance when asked (required). But understand that you are not required to answer questions about whether you’ve been drinking, where you’ve been, or how much […]

Ask Deandra: Should I Fight My DWI in Texas?

009 – First DWI (1)

By Deandra Grant, J.D., M.S. (Pharmaceutical Science), ACS-CHAL Forensic Lawyer-Scientist The question: Should I fight my DWI in Texas? The short answer: In almost every case, yes. A DWI conviction in Texas carries lifelong collateral consequences that extend far beyond the courthouse including background checks, professional licensing, security clearances, commercial driving privileges, insurance, immigration status, […]

Ask Deandra: How Long Does a DWI Stay on My Record in Texas?

010 – Record (1)

By Deandra Grant, J.D., M.S. (Pharmaceutical Science), ACS-CHAL Forensic Lawyer-Scientist The question: How long does a DWI stay on my record in Texas? The short answer: Forever, unless it is sealed or expunged. Texas does not automatically remove DWI convictions or DWI arrests from your criminal history record after any waiting period. A DWI conviction […]

The Texas Case That Could Change Federal Gun Charges for Anyone Who’s Ever Used Marijuana

Hemani case

Pending decision notice: The Supreme Court heard oral argument in United States v. Hemani on March 2, 2026. A decision is expected by late June or early July 2026. This blog reflects the law and the state of the argument as of May 2026. We will update it when the decision issues. If you have […]

Deandra Grant Law Welcomes Trial Attorney Jason Bowes to the Team

Bowes

Deandra Grant Law is proud to announce that veteran Texas trial lawyer Jason Bowes has joined the firm. Jason brings nearly two decades of courtroom experience and a hard-fought trial record to our criminal defense team, and will represent clients across Central and North Texas facing serious felony charges, child abuse and sex crime allegations, […]

Knowledge Vault Blog Named One of the 60 Best Texas Law Blogs to Follow in 2026

Top 60 Blogs

Deandra Grant Law’s Knowledge Vault Blog has been recognized by Feedspot as one of the 60 Best Texas Law Blogs to Follow in 2026, ranking #36 on their annual list of the most credible, active, and valuable Texas law blogs on the internet. Feedspot’s rankings are based on content relevancy, subject-matter expertise, posting frequency, and […]

Stefon Diggs: NFL Receiver’s Acquittal and the Limits of “Not Guilty”

022 – Stefon Diggs

By Deandra Grant & Griffin Grant Welcome to The Defense File where we examine the criminal cases of public figures through the lens of Texas criminal law. Each entry looks at what happened in court, what the defense argued, and what a defendant would have faced (and how they might have been defended) if the […]