Lawmakers passed two bills seeking to limit the president's ability to take military action without the prior approval of lawmakers. The White House has signaled that Trump would veto the legislation.
Aid workers are still reporting difficulty providing food and medical assistance to almost 20 million people after the Saudis agreed to lift a blockade of land, air and sea routes into Yemen Monday.
Appearing before the Senate Foreign Relations Committee, senior Trump national security officials argued existing use-of-force measures are doing the job, despite being on the books for 16 years.
