Looking for evidence of Obama's past, Fox News contacted 400 Columbia University students from the period when Obama claims to have been there, but none remembered him. Wayne Allyn Root was, like Obama, a political science major at Columbia who also graduated in 1983. In 2008, Root says of Obama, "I don't know a single person at Columbia that knew him, and they all know me. I don't have a classmate who ever knew Barack Obama at Columbia. Ever! Nobody recalls him. I'm not exaggerating, I'm not kidding." Root adds that he was also, like Obama, "Class of '83 political...