"Tyler Hassen, a former oil executive who had spent time on Elon Musk’s cost-cutting team, faced criticism because he had been given broad authority to make changes at the department." 

"Tyler Hassen, a former Texas oil executive from Elon Musk’s government efficiency team who was given sweeping powers to overhaul the Department of the Interior, is leaving the agency, he confirmed on Friday.

“It has been the honor of a lifetime to serve our great country under President Trump’s historic administration,” Mr. Hassen said in a statement to The New York Times. He said his six-month commitment to the agency had “come to a close.”

A former member of Mr. Musk’s Department of Government Efficiency, Mr. Hassen initially came to the Interior Department as an assistant secretary for policy, management and budget. The Associated Press reported that was changed in April to “principal deputy assistant secretary,” a position that, unlike assistant secretary, does not require Senate confirmation."

Lisa Friedman reports for the New York Times July 25, 2025. [2]