Bush directly criticized the Trump administration's move to fold the U.S. Agency for International Development into the State Department on Monday during a video tribute for the agency's staffers.

The videoconference marked the end of USAID's 63-year run as an independent agency before its absorption into the State Department.

Former Presidents Barack Obama and George W. Bush have delivered rare open criticism of the Trump administration in an emotional video farewell with staffers of the U.S. Agency for International Development.