Rep. Barbara Lee and allies have pushed politicians to reckon with U.S. overreach, and the Senate and Joe Biden are expected to help end the authorization.
The Democratic leader, who voted for the AUMF in 2002, warned that a future president could "use it as a justification for military adventurism."
But how hard are Democrats willing to fight to actually prevent war?
A lack of congressional oversight is leaving the Trump administration on a collision course with Tehran.
But Republicans say they're OK with the Pentagon calling the shots.
Some senators have this radical idea that Congress should vote on bombing raids and foreign invasions. Here's why they're likely to lose that argument. Again.
And they have no idea what the president might do next.