Crimes: other; tampering with evidence by law enforcement officer with specific intent; prohibit, and provide penalties. Amends sec. 483a of 1931 PA 328 (MCL 750.483a).

SB 337 amends Michigan's penal code to prohibit law enforcement officers from tampering with evidence or intimidating witnesses. It specifically bans altering, destroying, or concealing body-worn camera footage, and prevents officers from retaliating against people who report crimes or from influencing witness statements. Violations can result in misdemeanor or felony charges, with penalties including up to 10 years in prison for serious offenses involving threats or violence. The law directly affects law enforcement officers by imposing new criminal penalties for misconduct related to evidence handling and witness protection.