The staff member, 25-year-old Marko Elez, resigned after The Wall Street Journal revealed previous social media posts.

Andrew Natsios, the former head of USAID under President George W. Bush and a lifelong conservative, told Politico Tuesday that Musk’s snubs of the agency were a “bold-faced lie” and that the Trump administration’s idea to fold USAID’s priorities into the State Department was the “worst idea [he] could possibly imagine.”