Only if htis law passes and closes that route, else they'll use it like Cho did.
"Do illegal gun dealers require a stamp of approval?. "
Yes, cash. Otherwise they could care less about being criminally negligent, selling stolen property to psychopaths, ect...
Darn, Once again, The only people who will abide by these laws are the honest citizens. Criminals will just ignore them. Who will these laws benefit?.