Stephen Akard, who has served as the acting State Department inspector general since the May ouster of Steve Linick, has resigned his post and plans to join the private sector, the department said Wednesday.
Diana Shaw, the deputy inspector general, will serve as the next acting inspector general.
A former career foreign-service officer, Mr. Akard has led the department’s Office of Foreign Missions since September 2019, a position he continued to hold while serving as acting inspector general. He served as a foreign-affairs adviser to Vice President Mike Pence during the latter’s time as Indiana governor.
Mr. Akard had faced criticism from congressional Democrats over his dual roles—one in which he reported to Secretary of State Mike Pompeo, and the other in which he was meant to serve as an independent watchdog over the department and its officials.
Congressional Democrats have opened an inquiry into Mr. Linick’s firing, on Monday issuing subpoenas to four State Department officials.
Mr. Linick has said that at the time of his termination, his office was examining the Trump administration’s May 24, 2019, use of an emergency declaration to expedite arms sales to Saudi Arabia and the United Arab Emirates.