SB 1937 Texas Senate · 89th Legislature (2025)

Relating to the testing of evidence containing biological materials in capital cases.

SB 1937 requires the state to have nuclear DNA testing performed on all biological evidence collected in capital cases (cases seeking the death penalty) before trial. The testing must be done by a state laboratory or an accredited lab, with the lab covering the costs. It creates a process where the state, defense, and lab expert must agree on which evidence qualifies for testing, with a presumption favoring the defendant's requests if they disagree. If evidence is destroyed during testing, the lab must provide the defendant with testing notes and results. The bill applies only to capital cases with indictments filed after its effective date and was vetoed by the governor on June 22, 2025.
Bill status vetoed 4 of 5 stages cleared
Introduction
Mar 2025
Committee Review
May 2025
Senate Passage
May 2025
House Passage
May 2025
Vetoed
Jun 2025
Introduced Mar 5, 2025 Vetoed Jun 22, 2025
Maddy AI version diff · 2 comparisons

What changed between versions

Engrossed Enrolled · 1 edit · May 26, 2025
MINOR
This bill text shows formatting and layout changes between the Engrossed and Enrolled versions, with no substantive policy changes to the DNA testing requirements for capital cases. The core provisions regarding biological evidence testing, laboratory responsibilities, and effective dates remain identical.
TECHNICAL

Removed page numbers, bill tracking numbers, and formatting artifacts from the Enrolled version while preserving all legislative text content.

Floor votes · House May 23, 2025

How they voted

This bill passed the Senate by voice vote (no roll call recorded).
Full legislative history

Actions timeline

Total actions
49
Key actions
14
Committee
11
Jun 22, 2025
Vetoed
Vetoed by the Governor
executive
May 26, 2025
Lower · Passed
Signed in the House
lower
May 26, 2025
Upper · Passed
Signed in the Senate
upper
May 23, 2025
Upper · Passed
House passage reported
upper
May 23, 2025
Lower · Passed
Passed
lower
May 19, 2025
Lower · Passed
Committee report sent to Calendars
lower
May 19, 2025
Lower · Passed
Committee report distributed
lower
May 15, 2025
Lower · Passed
Reported favorably w/o amendment(s)
lower
May 13, 2025
Lower · Passed
Left pending in committee
lower
May 13, 2025
Lower · Passed
Testimony taken/registration(s) recorded in committee
lower
Apr 22, 2025
Committee
Referred to Criminal Jurisprudence
lower
Apr 22, 2025
Introduced
Read first time
lower
Apr 17, 2025
Introduced
Received from the Senate
lower
Apr 16, 2025
Upper · Passed
Passed
upper
Apr 10, 2025
Upper · Passed
Committee report printed and distributed
upper
Apr 10, 2025
Upper · Passed
Reported favorably w/o amendments
upper
Apr 8, 2025
Upper · Passed
Vote taken in committee
upper
Apr 8, 2025
Upper · Passed
Testimony taken in committee
upper
Mar 17, 2025
Committee
Referred to Criminal Justice
upper
Mar 17, 2025
Introduced
Read first time
upper
2 primary · 1 co-sponsor

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