The
William Jefferson Clinton Federal Building is located in the
Federal Triangle in
Washington, D.C., across 12th Street from the
Old Post Office. The
New Post Office, as the Clinton Building was originally known, housed the headquarters of the
Post Office Department until that department was replaced by the
United States Postal Service in 1971. The building, which now houses the headquarters of the
U.S. Environmental Protection Agency, was first renamed the
Ariel Rios Federal Building on February 5, 1985, in honor of
Ariel Rios, an
undercover special agent for the
Bureau of Alcohol, Tobacco, Firearms and Explosives who was killed in the line of duty on December 2, 1982. After the federal government announced that it would be renaming the building again in honor of former President
Bill Clinton on May 13, 2013, the building was officially renamed to its current title, the
William Jefferson Clinton Federal Building, at a ceremony that took place July 17, 2013.