Both Obama and Hillary have a long history covering for terrorists. Obama with his Weather Underground friends Ayers and Dohrn. Hillary with the Puerto Rican Marxist terror group, the FALN, and also support for the Maoist-revolutionary Black Panthers while at Yale.
In 1995 when Bill Ayers patted Zippo on his head, he brought Zippo into the Clinton's inner circle for Clinton's 1996 reelection if needed. The Clinton's were using the Weather Underground play book for the 1996 election. Clinton didn't need him for his reelection, but he was brought into Clinton's inner circle just in case.