As the humanitarian crisis in war-torn Yemen continues to deepen, with the number of cholera cases on track to hit one million by year’s end, a new bipartisan bill aims to stop the U.S. from fueling Saudi Arabia’s assault on the impoverished and imperiled nation.

Introduced by four lawmakers in the House on Wednesday, the legislation cites the War Powers Resolution, declaring that Congress has never given authorization for U.S. forces to be involved in the conflict so the intelligence and refueling assistance to the Saudi-led coalition’s years-long aerial bombings is based on “no provision of law.” It also calls the war counterproductive to the stated aim of defeating Al Qaeda.

It calls for removal of U.S. military forces aiding the coalition’s campaign within 30 days “unless and until a declaration of war or specific authorization for such use of United States Armed Forces has been enacted.”

“We aim to restore Congress as the constitutionally mandated branch of government that may declare war and retain oversight over it,” Democratic sponsors Rep. Ro Khanna (Calif.) and Rep. Mark Pocan (Wis.) wrote in a letter to colleagues, according to Foreign Policy.

The Republican co-sponsors are Rep. Thomas Massie (Ky.) and Rep. Walter Jones (N.C.).