Kenneth Melson has yet to explain how he plans to track the sale/transfer from the "straw buyer" to the cartel.
Here's a better solution: Arm everyone. We outnumber the druggies by 20 to 1. If they start shooting, shoot back.
No, seriously. This very basic, yet effective idea, with its roots in the histories of disarmed peoples oppressed by criminal elements, is at the heart of our Second Amendment, which reads: "A well regulated militia being necessary to the security of a free State, the right of the People to keep and bear arms shall not be infringed."
One cannot secure, nor be secure, in a State which infringes up the right of its People to keep and bear arms. On the other hand, when one respects the right of the People to keep and bear arms, the People will secure themselves and the State.
You're still going to have nutcases like in Tuscon, Virginia Tech, Fairchild, and Columbine, but when the People are armed, the nutcases don't last very long. They might kill 2 people before being taken out, but not 32 people.