Washington Mayor Adrian Fenty (C) is escorted by a police officer as he leaves the Supreme Court in Washington, March 18, 2008, where the court considered a landmark legal battle over gun rights. The District of Columbia is asking the Supreme Court to preserve the capital's ban on handguns in a major case that could have a far-reaching impact on gun control laws in the United States, estimated to have the world's highest civilian gun ownership rate. REUTERS/Jason Reed (UNITED STATES)