Court cases to look at.

District of Columbia v. Heller - 2005 - Supreme Court upholds the right to keep and bear arms for self defense in the home.

United States v. Emerson - 2001 - 5th Circuit Court of Appeals upholds the right to keep and bear arms.

Silveira v. Lockyer - 2002 - 9th Circuit Court of Appeals rules that the 2nd Amendment does not provide an individual right to bear arms. Instead, it argues that there is a collective right to bear arms for the purposes of state militias. The Supreme Court refused to hear an appeal.

United States v. Miller - 1939 - Supreme Court ruling that can be (and has been) applied to both sides of the debate.

United States v. Cruikshank - 1876 - Supreme Court ruling that the 2nd Amendment does not apply to the states.

Presser v. Illinois - 1886 - Supreme Court ruling that agrees with Cruikshank.