Examples of groups of citizens include but not limited to: felons, people under age 25, people under mental health care, etc.

Jurisdictions can be federal, state, local, etc.

An assault rifle is a firearm that can switch between semiautomatic and fully automatic fire. It uses an intermediate-power cartridge and a detachable box magazine.

Enacted means passed and signed into law. Any challenges in any courts are irrelevant to the question.