obsession with president obama s birth certificate. barack obama should end this and he should provide the public with a birth certificate. reporter: he took the fringe con piracy theory that president obama wasn t actually american mainstream and in october, he insisted to cnn that the so-called central park five, the young men wrongly convicted of raping and assaulting a woman in central park in 1989 were still indeed guilty. one of them yousef sal lom campaigned for clinton. had donald had his way, i would be dade. reporter: at the time, trump took out ads in newspapers calling for new york to reinstate the death penalty. it s if they re found guilty, if the wrom died but if she died i think they should be executed. reporter: they were exonerated years ago by dna evidence and the confession of the real perpetrator and the city of new york paid a $40 million settlement, but trump never apologized or admitted he