 It's Morning Edition from NPR News. I'm Steve Inskeep. And I'm Sasha Pfeiffer. The U.S. Secret Service is under intense scrutiny because of last weekend's attempted assassination of former President Donald Trump at a rally in Pennsylvania, a rally at which he was under Secret Service protection. One bystander was killed, two were injured, and Trump's right ear was hit by a bullet. Alejandro Mayorkas is Secretary of the Department of Homeland Security. The Secret Service is a component agency of DHS.