Zinke, who is now running for Congress, was plagued by scandals during his time in the administration, but the Department of Justice declined to prosecute him.

Former Interior Secretary and current GOP congressional candidate Ryan Zinke and his then-chief of staff lied repeatedly to investigators about their attempt to quash a tribal casino in Connecticut, the Interior Department’s internal watchdog concluded in a report released Wednesday.

The report from the Office of Inspector General offers the most damning evidence in long-running allegations that Zinke personally blocked the casino project, a partnership between the Mashantucket Pequot and the Mohegan tribes, at the urging of lobbyists from competing casino giant MGM Resorts International, then misled federal investigators about his actions.