Capitol defenders blame missed intelligence for deadly Jan. 6 breach In Senate testimony, security officials blame other federal agencies – and each other – for their failure to defend the building as supporters of then-President Trump overwhelmed security barriers. By Mike DeBonis and Karoun DemirjianThe Washington Post Share Former U.S. Capitol Police Chief Steven Sund testifies before a Senate Homeland Security and Governmental Affairs & Senate Rules and Administration joint hearing on Capitol Hill in Washington on Tuesday to examine the Jan. 6 attack on the Capitol. Andrew Harnik/Associated Press WASHINGTON — Top officials responsible for security at the Capitol on Jan. 6 as it was overrun by a mob backing Donald Trump blamed wide-ranging intelligence failures for the deadly attack at a Senate hearing Tuesday, pointing to lapses that included a missed email warning of violence and a larger inability to recognize the threat posed by domestic right-wing extremism.