Financial aid money from who? >>> Likely the American tax payer, but possibly a private donation as many grants and scholarships are.
Like who?
Obama went to college in the late 70's/early 80's. The heyday of Affirmative Action. As a black college student he didn't need to claim foreign citizenship because liberal schools like Occidental and Columbia were fighting for black students. He and Michelle could have gotten a free ride from any school they chose to grace with their presence. And they probably did.