 Yesterday, Chairman of the House Oversight Committee, James Comer, issued a subpoena compelling Cheadle to appear at a hearing on Monday. The Department of Homeland Security said Cheadle will attend. The House Homeland Security Committee, chaired by Republican Mark Green, will invite law enforcement agencies from Pennsylvania to testify at a separate hearing in the next few days as well. Republican Senator Ted Cruz tells Fox News the briefing senators received yesterday was short on details, leaving a number of questions unanswered.