2) FBI (Federal Bureau of Ignoring death threats)
And raise the age for purchase of AR-15's to 21. YEAH I SAID IT.
Fine, raise the age to buy weapons to 21 BUT do you think mental cases like this will be any LESS nuts two years later? With luck, they would have been knocked off by cops before 21, but crazy is crazy at any age. Label them, restrict them, protect society.
Age 25 for voting and buying any gun.