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HB 2255

Modifies provisions relating to expert witnesses

2026 Regular Session Introduced by Barry Hovis

HB 2255 revises expert witness qualification and testimony standards in Missouri courts, potentially affecting evidence admissibility and litigation accessibility across civil and criminal cases.

Action Postponed (H)
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Bill Summary · HB 2255

Legislative bill overview

HB 2255 modifies Missouri's rules governing expert witness testimony and qualifications in legal proceedings. The bill has been under review in executive sessions since February 2026 with multiple postponements, suggesting ongoing deliberation among committee members about its specific provisions.

Why is this important

Expert witness standards directly affect the reliability of evidence presented in civil and criminal cases, impacting everything from medical malpractice lawsuits to criminal trials. Changes to these rules can either strengthen courtroom fact-finding by raising evidentiary standards or restrict access to legitimate expert testimony depending on the modifications made.

Potential points of contention

  • Definition of expertise – Disputes may arise over what qualifications make someone an acceptable expert, potentially affecting specialized fields like forensic science, engineering, or medical practice
  • Gatekeeping standards – Changes could either tighten or loosen judicial review of expert credentials, affecting how many cases proceed to trial versus summary judgment
  • Cost and accessibility – Stricter requirements might increase litigation costs by requiring more credentialed experts, potentially disadvantaging lower-income litigants or smaller defendants

Compiled from official sources — confirm details with the bill’s official record.

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