Who cannot own a gun - Gun Control Act of 1968

Federal law, as it has been for almost forty-five years since the Gun Control Act of 1968, makes it generally illegal for the following to buy or possess firearms:

1. Has been convicted in any court of a crime punishable by imprisonment for a term exceeding one year;
2. Is a fugitive from justice;
3. Is an unlawful user of or addicted to any controlled substance;
4. Has been adjudicated as a mental defective or committed to a mental institution;
5. Is an alien illegally or unlawfully in the United States;
6. Has been discharged from the Armed Forces under dishonorable conditions;
7. Having been a citizen of the United States, has renounced U.S. citizenship;
8. Is subject to a court order that restrains the person from harassing, stalking, or threatening an intimate partner or child of such intimate partner, or;
9. Has been convicted in any court of a misdemeanor crime of domestic violence.

18 USC § 922 - Unlawful acts
Gun Control Act of 1968