I posit

I posit that we should do away with the NICS background check system altogether.  Every high profile shooting has been done by someone how had no trouble passing the check.  Therefore, NICS is a totally ineffective waste of resources.

It accomplishes nothing.

And if a felon is caught up by it... well no one goes to arrest him afterwards, anyway, so what is the point?  If you don't want a felon to get a gun then don't let him out of prison.  If he is safe enough to let out of prison and vote (now, in Virginia) you might well allow him the means to defend himself.