Tech billionaire Elon Musk said Monday that he and President Donald Trump were in the process of shutting down the U.S. Agency for International Development, escalating their war on the federal bureaucracy and defying the constitutional power of Congress to determine how money is spent.

“Elon Musk, a powerful and pivotal player in Trump’s inner circle, gets a shaky assessment from voters, with women clearly more critical of him than men,”Quinnipiac University Polling Analyst Tim Malloy said in the press release.

The tech billionaire and top Trump ally visited the General Services Administration, which appears to be a key part of his crusade to cut the cost of government buildings.