By July 2018, Pruitt was under at least 14 separate federal investigations by the Government Accountability Office, the EPA inspector general, the White House Office of Management and Budget, the U.S. Office of Special Counsel, and two House committees over his spending habits, conflicts of interest, extreme secrecy, and management practices. Pruitt made frequent use of first-class travel as well as frequent charter and military flights. As EPA administrator, Pruitt leased a condo in Washington, D.C., at a deeply discounted rate from a lobbyist whose clients were regulated by the EPA. Pruitt further caused ethics concerns by circumventing the White House and using a narrow provision of the Safe Drinking Water Act to autonomously give raises to his two closest aides of approximately $28,000 and $57,000 each, which were substantially higher than salaries paid to those in similar positions in the Obama administration, and which allowed both to avoid signing conflicts of interest pledges. By June 2018, amid a steady succession of revelations of misconduct, a growing chorus of conservatives had begun suggesting that Pruitt should resign. On July 5, 2018, Pruitt announced he would resign from office on July 9, leaving Andrew R. Wheeler as the acting head of the agency.