america's involvement in the vietnam war ended under the administration of president
Role of the United States in the Vietnam War On January 15, 1973, citing progress in peace negotiations, Nixon announced the suspension of all offensive actions against North Vietnam, to be followed by a unilateral withdrawal of all U.S. troops. The Paris Peace Accords on "Ending the War and Restoring Peace in Vietnam" were signed on January 27, officially ending direct U.S. involvement in the Vietnam War.