President Trump will face a choice later this week, when Congress sends him its first-ever use of the War Powers Resolution of 1973 to withdraw from a military conflict, reasserting authority after decades of lawmakers’ washing their hands of controversial conflicts.

The legislation seeks to remove the U.S. from the Saudi-led coalition that for four years has fought to restore ousted Yemeni President Abdrabbuh Hadi, who was deposed by Iran-friendly Shiite rebels in 2015, three years after he won a single-candidate election.