In its first comprehensive look at the Second Amendment right to bear arms, the Supreme Court is expected to rule on the constitutionality of Washington, D.C.'s ban on handguns. The District of Columbia's ban is considered the nation's strictest gun-control law. A ruling by the court to strike it down could threaten other gun-control measures across the country, including laws that ban machine guns or assault weapons. Although the Second Amendment was ratified in... (GunPolicy.org)