The executive counsel at the fossil fuel behemoth ExxonMobil is leaving his role to join the Trump Justice Department’s newly renamed Energy and Natural Resources Division, a move one watchdog organization said shows that “Big Oil’s capture of the US government is now complete.”

Robert Levy, who worked at Exxon for 17 years, announced in a recent LinkedIn post that he is departing the company, whose profits surged amid the Trump administration’s illegal war on Iran. Levy will reportedly serve as senior counsel at the DOJ’s Energy and Natural Resources Division, which the Trump Justice Department renamed last month from the Environment and Natural Resources Division.

Robert Weissman, co-president of Public Citizen, said in a statement Monday that “the new so-called Energy and Natural Resources Division at the Justice Department explicitly aims to abuse emergency powers to drive oil and gas production, override state environmental enforcement, and generally serve at the beck and call of Big Oil.”