[American Pageant](Kennedy, David., et al. The American Pageant. Thirteenth edition. Boston: Houghton Mifflin Company, 2006)Beginning with a break-in of the Democratic Party's headquarters in the Watergate building, President Nixon was tied to "dirty tricks" that tried to discredit Democrats. In a Senate committee's hearings, Nixon denied any knowledge of the burglary, yet information leaked that he had taped his conversations. Refusing to give up all of the tapes, Nixon obstructed justice and was going to be impeached by Congress. The Watergate scandal came to an end when Nixon resigned from office in 1974.