 Dick Iuliano, WTOP News. In other news, the head of the Secret Service is expected to get grilled today at a congressional hearing over the assassination attempt on former President Trump. WTOP's Mitchell Miller has more today on The Hill. Secret Service Director Kimberly Cheadle has been sharply criticized by lawmakers for what appears to have been a glaring error, failing to secure the rooftop of the building where the would-be assassin in Pennsylvania fired at the former president. House Speaker Mike Johnson is among those calling for her resignation.