Ted Lieu, a Democrat representing Los Angeles County, served in the Air Force and is a colonel in the Air Force Reserves. The brutal bombing of civilian areas with U.S.-supplied planes and weapons has led him to act when most of his colleagues have stayed silent.

“I taught the law of war when I was on active duty,” he told The Intercept. “You can’t kill children, newlyweds, doctors and patients — those are exempt targets under the law of war, and the coalition has been repeatedly striking civilians,” he said. “So it is very disturbing to me. It is even worse that the U.S. is aiding this coalition.”