On August 7, 1964, in response to an alleged North
Vietnamese attack on the USS Maddox three days earlier, the US
Congress passed the Gulf of Tonkin Resolution, approving and
supporting "the determination of the President, as Commander in
Chief, to take all necessary measures to repel any armed attack
against the forces of the United States and to prevent further
aggression." The resolution marked a major escalation in the US role
in the Vietnam war.
Review the text of the resolution and President Johnson's message to Congress.