Initial connection probably in LA through black panthers and FMD referral. They may have paid for Occidental as well.
Hard to imagine, but Tom Ayers probably encouraged his son to bomb Americans, supported him while he did it, and then gave us this POS called Obama.
Since Obama’s room mates at Occidental College were Muslim foreign students (as were his room mates at Columbia) my bet is that while at Occidental, Obama heard of Columbia's and Columbia Professor Khalidi’s agressive recruitment of Muslim foreign students and headed there.