Sen. Lindsey Graham (R-S.C.) is making a big flip on his Senate colleague J.D. Vance (R-OH) now that he’s Donald Trump’s official running mate. Washington Post writer Aaron Blake recalled Graham’s attack on Vance just a few months ago. Vance penned a column for the New York Times on Ukraine funding. Graham responded by calling it “garbage.” “I challenge J.D. Vance to go to Ukraine and get a briefing from the Ukrainian military and talk to the Ukrainian people. Then tell me what you think. Quit talking about things you don’t know anything about until you go,” knocked Graham while speaking on Fo…