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.

As most staff members at the U.S. Agency for International Development marked their final day with the agency, they got thanks from two presidents and a rock star.

In a rare moment of public unity, Barack Obama and George W. Bush condemned Trump for shutting down USAID. The closure ends a bipartisan legacy of providing lifesaving aid, leaving millions without vital medicine and support.