Most likely the Saudi’s ties to terrorist financiers. From his photos, he was apparently a member of the royal family. Also, the royal family is quick to pull their family members out of hostile situations like they seem to be doing in this case. Many of these terrorist orgs are financed through various arms of the royal family (of course, never the actual king, but one of the thousands of cousin families).
My bet, this kids parents or uncle funded terrorist orgs and the radical cleric that taught the bombers. It is an indirect connection but enough to make people freak if they realize the WH help get him out of the country.
And Moochelle visited him in the hospital!
I think it may be more of a direct connection. Glenn sounds pretty serious.
That sounds like a very plausible theory.