House Oversight Committee Chairman Trey Gowdy, R-S.C., sent letters to White House Chief of Staff John Kelly and FBI Director Christopher Wray, demanding answers about who in the White House knew of the domestic violence accusations against President Trump's senior aide. Porter, whose job as staff secretary gave him access to some of the most sensitive documents the president sees, was allowed to work on an interim security clearance until he resigned last week when the accusations came to light. Two of Porter's ex-wives accused him of physical abuse, and told FBI agents that he could be susceptible to blackmail. "The committee is investigating the policies and processes by which interim security clearances are investigated and adjudicated within the executive branch, and the extent to which any security clearance issued to Porter comported with those policies and processes," Gowdy said in the letters.