Tech billionaire Elon Musk said Monday that he and President Donald Trump were in the process of shutting down the USAID, escalating their war on the federal bureaucracy.

The Trump administration has placed two top security chiefs at the U.S. Agency for International Development on leave after they refused to turn over classified material to Elon Musk’s government-inspection teams.

Elon Musk called USAID a criminal organization that should “die.” Proponents say it’s a key arm of U.S. influence that, if destroyed, “cannot be easily rebuilt.”