The Supreme Court of the United States (SCOTUS) has declared the Second Amendment protects the right of an individual to keep and bear arms, striking down the (failed) District of Columbia handgun ban. This article discusses what exactly the court held, and what that means for American gun owners:
http://www.learnaboutguns.com/2008/06/26/district-of-columbia-v-heller-supreme-court-declares-gun-ownership-an-individual-right/