Former Presidents George W. Bush and Barack Obama joined U2 frontman Bono on Monday to console USAID employees and take some final shots at President Donald Trump after the agency was shut down over fraud and mismanagement.

USAID, founded under the Kennedy administration, was created to provide foreign economic aid. But earlier this year, it became one of the first targets of the Department of Government Efficiency, or DOGE, which was established by President Trump to root out government waste. Then-DOGE head Elon Musk slammed the agency as “a viper’s nest of radical-left Marxists who hate America.”

USAID was officially absorbed by the State Department on Tuesday.

In a rare public rebuke, Bush, who has largely avoided criticizing Trump, said the closure ends a major piece of his presidency—the AIDS and HIV relief initiative that is credited with saving 25 million lives around the world.

“You’ve showed the great strength of America through your work—and that is your good heart,” Bush told the staff. “Is it in our national interests that 25 million people who would have died now live? I think it is, and so do you.”