Of course you don't have to do anything. You can leave your unsubstantiated opinion completely invalid, as in no back-up. Sorry, your word carries no weight. This has nothing to do with some Marvel power to keep people from getting guns....this goes to specifically your claim that THIS American born Muslim should have been barred from getting a gun in the 1st place.
And again, based on what??
You threw out a vague reference to "somewhat unbalanced", whatever the hell that's supposed to mean, by some apparent investigation, by someone(s), at sometime. That just has no legs in depriving a person their Constitutional rights. He purchased his firearms legally, went thru all the mandated background checks. Did everything that the left demands. So, the Government screwed up, if they missed something (the same ones running our healthcare currently, but that's for another thread). So.....what exactly did they miss, and when??