Multi tasking and astral travel.
It must be as Manning has Obama working for the CIA fighting the Soviets alongside Afghan Mujahedin, working for the CIA as a drug dealer back here in America and, presumably not working for the CIA while studying Marxism at the Patrice Lumumba Peoples' Friendship University in Moscow during the time-frame that more lucid accounts have Obama attending Columbia.
Maybe Obama just accumulated a lot of frequent flier miles (on his Indonesian passport, naturally).