Why Did McCain and Graham Meet With A Top ISIS Terrorist?

ISIS leader Abdel Hakim Belhaj was armed and financed by the U.S. government; Belhaj, above, met with John McCain and Lindsey Graham and their meeting is shown in the video below. Belhaj was formerly the Emir of the Libyan Islamic Fighting Group.  

https://www.youtube.com/watch?feature=player_embedded&v=r6L7D7ZK-k0