Criminal procedure; clarifying and including additional evidentiary disclosure requirements for prosecutors; effective date.

HB 1973 requires Oklahoma prosecutors to disclose specific evidence to defense attorneys before trial, directly affecting defendants and their legal teams. The bill clarifies that prosecutors must provide all evidence relevant to defense, including witness statements, forensic lab reports (even preliminary results), criminal records of witnesses, and any information that could negate guilt, reduce charges, or impeach prosecution witnesses. It also mandates disclosure of non-physical evidence like electronic recordings and requires prosecutors to make a "diligent, good faith effort" to locate discoverable materials not in their direct possession. The bill explicitly prohibits disclosure of certain personal details (like Social Security numbers) in criminal record checks. This amendment to Oklahoma's criminal discovery code aims to standardize pretrial transparency.