Impractical?Maybe but if you can fly to the moon you also have the ability
to gather up guns.
Unconstitutional?No problem to change that,it is just an amendment.
Happens all over the world on a regular basis.
Yes i agree illegal immigrants are a problem not only in the USA.
This shooter is illegal in the country,many times over.
He was living in a house and had everything else he needed,who sold him the gun and who rented him the house?Law abiding citizens?
Remember nearly all illegally owned guns started of as legal guns.