President Donald Trump’s national security advisor, Mike Waltz, has repeatedly landed in hot water in recent days, beginning with an uproar from Democrats over a Signal chat leak with high-ranking national security officials that has since snowballed,

Amid the backlash to the Trump administration’s use of the private messaging app Signal for sensitive U.S. military planning in Yemen, Politico reported Wednesday that national security adviser Mike Waltz’s team set up at least 20 such chats.