 President Trump at a political rally in Pennsylvania last weekend. In Paris, Claudia Grisales has more. The Republican-led House Oversight Committee has already subpoenaed the head of the Secret Service, Kimberly Cheadle, who is now set to appear on the Hill on Monday. And this is as the GOP-led House Homeland Security Panel is also expecting to hear testimony from Cheadle and the heads of DHS, which oversees Secret Service and the FBI.