Congressional Brief in DC v. Heller:

A brief in favor of Respondent Heller has just been filed on behalf of 250 Members of the United States of House of Representatives, 55 United States Senators, and the President of the United States Senate, Richard B. Cheney. In January, a brief in support of the DC handgun and self-defense ban was filed by 18 Members of the U.S. House of Representatives. The latter brief suggests that "Consideration of, or deference to, Congress’s experience as an interpreter of the Constitution, in appropriate circumstances, is entirely consistent with the Court’s role." Indeed true.

The 250/55/1 brief explains that Congress has repeatedly declared the Second Amendment to be an individual right, in the 1866 Freedmen's Bureau Act, the 1941 Property Requisition Act, the 1986 Firearms Owners' Protection Act, and the 2006 Protection of Lawful Commerce in Arms Act.