Senate Bill 380 aims to amend existing criminal law in Wisconsin by eliminating certain defenses related to adequate provocation, self-defense, and not guilty by reason of mental disease or defect when these claims are based on a victim's gender identity or sexual orientation. Specifically, the bill stipulates that a defendant cannot assert adequate provocation or self-defense if their actions stem from the discovery or potential disclosure of the victim's gender identity or sexual orientation, including situations where the victim made a romantic advance or had a prior relationship with the defendant.

Additionally, the bill clarifies that mental disease or defect does not include conditions arising from the victim's gender identity or sexual orientation. The legal language has been updated to reflect these changes, including the renumbering and amendment of existing statutes and the creation of new provisions that explicitly outline these exclusions. The bill is set to apply to offenses committed on or after its effective date.