Presser Fed says they are investigating domestic terrorism. That’s usually shorthand for “Tea Party Terrorism”. Time will tell. Possible it’s a guy with a grudge against the Marines.
I’ll bet CNN is going nuts trying to find a tie-in with the TP/Conservative/Confederate flag or something. If they find out that Hussein did it they’ll just say someone acting out. My belief is ISIS/ISIL would do these single attacks. 0bama can then say it was a single attack - no worries.