 After the attempted assassination of former President Donald Trump, Secret Service Director Kimberly Cheadle is set to testify on security lapses that may have led to the shooting. Watch the House Oversight and Reform Committee hearing live today at 10 a.m. Eastern on C-SPAN 2. C-SPAN Now, our free mobile video app, or online at c-span.org. Next, the roundtable discussions from the Sunday TV talk shows. We begin with ABC's This Week.