Mayorkas, Secret Service face questions after shooting at Trump rally

The transcript discusses the upcoming appearance of the Secret Service director before the House Oversight Committee, focusing on a recent security failure. Secretary Mayorkas has expressed confidence in the agency despite the incident. The director is currently at the RNC in Milwaukee, where security measures remain unchanged due to its designation as a top national security event.

What can be inferred about Kim Cheadle's upcoming appearance before the House Oversight Committee?

What confidence did Secretary Mayorkas express regarding the Secret Service agency?