Bloody hell. Really.Are you saying they would have arrested a ISIS Sympathizer and so it would never have happened?
If that's the case that's not accurate. The guy who shot up the club in Florida was reported to and looked into by the FBI as was the male suspect in the San Bernadino case.
Both of those cases were claimed to be ISIS linked
Gun control won't fix the problem either. We have drug control and thousands are dying of that.