March 4 incident involved allegedly drunk senior agents who drove into the White House complex in a government vehicle . A suspicious package was under investigation nearby as a potential bomb ; it can be seen in a police video released Tuesday . Secret Service Director Joseph Clancy testified in a congressional hearing and defended his agency . Democrat oversight chairman said it was 'highly suspicious ' that the Secret Service had deleted its own video of the incident .
March 4 incident involved allegedly drunk senior agents who drove into the White House complex in a government vehicle . A suspicious package was under investigation nearby as a potential bomb ; it can be seen in a police video released Tuesday . Secret Service Director Joseph Clancy testified in a congressional hearing and defended his agency . Republican oversight chairman said it was 'highly suspicious ' that the Secret Service had deleted its own video of the incident .