Following Nixon's unauthorized escalations of the Vietnam War, the Congressional Framers of the War Powers Resolution knew that it was likely that future Presidents would try to use military force without Congressional authorization. That's why they put multiple mechanisms in the WPR to help future Congresses defend their war powers.
One of those mechanisms was the requirement that the President report in writing to Congress within 48 hours of using military force without a declaration of war, stating: "(A) the circumstances necessitating the introduction of United States Armed Forces; (B) the constitutional and legislative authority under which such introduction took place; and (C) the estimated scope and duration of the hostilities or involvement."
On April 7, Reps. Peter DeFazio [OR-], Mark Pocan [WI-2], Barbara Lee [CA-13], and James McGovern [MA-2] sent a letter to Trump reminding him that under the War Powers Resolution, he has 48 hours to report to Congress on his unauthorized strike.
Add your voice to those of DeFazio, Pocan, Lee and McGovern by signing our petition at MoveOn.