To amend title 18, United States Code, to prohibit gay and trans panic defenses.

Gay and Trans Panic Defense Prohibition Act of 2018 This bill generally prohibits a federal criminal defendant from asserting, as a defense, that the nonviolent sexual advance of an individual or a perception or belief of the gender, gender identify or expression, or sexual orientation of an individual excuses or justifies conduct or mitigates the severity of an offense.