Trump will veto the measure, but political pressure to end the war will increase. War Powers Act of 1973 The War Powers Resolution of 1973 is a federal law designed to limit the U.S. president’s ability to initiate or escalate military actions abroad without congressional approval Key Provisions 48-Hour Notification: The president must notify Congress …Trump will veto the measure, but political pressure to end the war will increase. War Powers Act of 1973 The War Powers Resolution of 1973 is a federal law designed to limit the U.S. president’s ability to initiate or escalate military actions abroad without congressional approval Key Provisions 48-Hour Notification: The president must notify Congress …