Several Secret Service sources question whether the agency's acting director perjured himself during a House committee hearing.

The U.S. Secret Service’s acting director told a U.S. House of Representatives panel on Thursday that he has overhauled the agency's security practices after a gunman shot President-elect Donald Trump in July.

The U.S. Secret Service's Acting Director Ronald Rowe got into a shouting match with Republican lawmaker Pat Fallon during a hearing on Dec. 5. Rowe was testifying to a task force that has been investigating two failed assassination attempts on President-elect Donald Trump when he got into the heated exchange with Fallon,