The head of the U.S. Secret Service is defending security arrangements at last Saturday’s White House Correspondents’ Association dinner, saying he would not change a thing about the security plan, even as questions continue to swirl around the shooting and his leadership of the agency.

A preliminary report by the House Task Force on the attempted assassination attempt of Donald Trump provides new detail about the lack of coordination between the Secret Service and state and local law enforcement officers that contributed to Trump nearly being killed and the murder of rally-goer Corey Comperatore.

The Secret Service could have thwarted the two assassination attempts against former President Trump if it had flown a surveillance drone at the two sites – the Butler, Pennsylvania, rally and the Florida golf course – before Trump set foot in either place, according to members of Congress who have spent months investigating the security failures surrounding the two events.