Secret Service Director Julia Pierson offered her resignation today "in light of recent and accumulating reports about the agency," according to White House spokesman Josh Earnest. That is, those times the Secret Service let a guy with a knife get into the White House and a guy with a gun ride an elevator with Obama.

The New York Times notes, "Without directly saying so, Earnest strongly suggested that the elevator incident—and the fact that the White House had learned of it 'just minutes' before it was reported on Tuesday—tipped the scales against Pierson."

Department of Homeland Security Secretary Jeh Johnson said in a statement that he appointed Joseph Clancy, an agent who used to be in charge of the Presidential Protective Division, as acting director of the Secret Service.

[Photo via AP]