Former presidents George W. Bush and Barack Obama are once again joining forces to denounce President Donald Trump, this time for slashing international services they claim are critical to U.S. interests. Bush appears in a new video alongside Obama and U2 frontman Bono, a notorious Trump critic, praising the departing staffers of USAID, the international diplomacy arm that Trump gutted earlier this year. Bush was an advocate for funding the program to combat AIDS and HIV in parts of Africa. “Gutting USAID is a travesty, and it’s a tragedy,” Obama said in a video shown to departing USAID employees on...