WASHINGTON (AP) – President Donald Trump’s former acting White House chief of staff resigned his post as special envoy to Northern Ireland on Thursday, saying “I can’t do it. I can’t stay.” Mulvaney joined a growing list of Trump administration officials who are leaving following the violent riot at the Capitol on Wednesday. The riot occurred after Trump addressed a massive rally in Washington fueled by the president’s baseless allegations that he lost the November election because of election fraud. A mob breached the Capitol building just as lawmakers were working to certify Electoral College votes, sealing President-elect Joe Biden’s victory. Mulvaney said he called Secretary of State Mike Pompeo Wednesday night to say he was resigning.