The White House. The highlight of this White House home page is the interactive citizen handbook. Also available are White House tours and entry into White House briefing rooms. Enter the briefing rooms to get current information on White House speeches, statements, and press releases as well as current government statistics.
http://www.whitehouse.gov

The Weekly Compilation of Presidential Documents is published every Monday by the Office of the Federal Register, National Archives and Records Administration and contains statements, message, and other presidential materials released by the White House during the preceding week. This is a searchable database.
http://www.access.gpo.gov/nara/nara003.html

Public Papers of the Presidents of the United States contains the papers and speeches of the president of the United States that have been issued by the Office of the Press Secretary. This is a searchable database.
http://www.gpo.gov/nara/pubpaps/srchpaps.html