Suspect in shootings of Democratic office in Arizona had over 200 guns in his home, officials find

had more than 200 guns and over 250,000 rounds of ammunition in his home

This isn't illegal.

Kelly was being held on three felony counts of acts of terrorism and four other counts related to the shootings, according to police.

Firing a firearm inside city limits or other non-hunting/non-target shooting location is illegal. If he did any of that, then prosecute him and when found guilty of federal firearm offenses, take all his toys away and let him sit in jail a few years pondering his life mistakes. He should never be allowed to own a firearm again, for the rest of his life.