As a Legal immigrant I was able to purchase firearms, just needed my Green Card # on the FBI forms. Plus it took like 30 mins before I could walk out of the place with my deadly weapon rather than the 10 or 15 for Citizens!

I see both sides of the gun argument. Coming from the UK where the Police don't even carry guns and gun crime is crazy low, I see that making it impossible for people to own them works. But while everyone here has one, then I'll keep hold of mine too!