CBS News correspondent Nikole Killion asked Rep. Alexandria Ocasio-Cortez (D-N.Y.) why as a woman of color she would "back an old white guy" during an interview that aired Monday. The freshman congresswoman had announced she was endorsing Sen. Bernie Sanders (I-Vt.) for president and appeared at a rally together on Saturday. “As a woman of color, why back an old white guy? And is this the future of the party?” asked Killion after Ocasio-Cortez spoke at the Sanders rally in Queens, N.Y. “I’m actually very excited about this partnership because it shows what we have to do in our country...