After then-president Obama's speech at the National Defense University examining the U.S. war powers during the War on Terror, Schiff introduced bipartisan legislation to repeal the 2001 Authorization for Use of Military Force Against Terrorists, the legislation passed in the days after the September 11 attacks to combat al-Qaeda, because he felt that "the current AUMF is outdated and straining at the edges to justify the use of force outside the war theater". The bill, introduced with Rep. Tom Rooney (R-FL), was intended to sunset. In addition to his legislation, Schiff has been a forceful proponent of debating and voting on a new war authorization against the Islamic State of Iraq and the Levant.