 Well, Womack says it's clear there was a security breakdown. Personally, I'm not willing to throw the Secret Service under the bus. Lawmakers want to know more about why the gunman was able to get such a clean line of sight, which nearly cost the former president his life. On Capitol Hill, Mitchell Miller, WTOP News. And this morning, the FBI and Secret Service continue to search for a possible motive after this weekend's assassination attempt. CBS News correspondent Charlie Damaris is on the scene.