Following the Clinton administration, he worked at the law firm of Covington &amp; Burling in Washington, D.C., representing the firm's multinational corporate clients in litigation. He was senior legal advisor to Barack Obama during Obama's presidential campaign and one of three members of Obama's vice-presidential selection committee. Holder was a close ally and confidant of Obama's and was selected as President Obama's first Attorney General. Although he became the first sitting Attorney General to be held in contempt of Congress during an investigation of the Operation Fast and Furious ATF gunwalking scandal, the Justice Department's Inspector General later cleared Holder of any wrongdoing. Holder was succeeded as Attorney General by Loretta Lynch in April 2015. He returned to Covington &amp; Burling, where he continues to practice corporate litigation, and is also involved with efforts at gerrymandering reform through the National Democratic Redistricting Committee. He is a member of the Democratic Party.