text:  This is Weekend Edition from NPR News. I'm Scott Simon. Thanks for being with us. Kimberly Cheadle, director of the U.S. Secret Service, faces sharp questions following the assassination attempt on former President Donald Trump. Monday, she testifies before the House Committee on Oversight and Accountability. Representative Tim Burchett, Republican of Tennessee, is on that committee and joins us now. Congressman, thanks for being with us.