Originally Posted by Tommycat
Well in the US, there is a black market for almost everything that is banned. The rather porous border with Mexico makes it easier to get things like illegal arms. We saw something similar with when we had prohibition. Alcohol was brought in from Canada and many other countries(as well as produced by moonshiners).
There is also a pretty bad history concerning the attempts to ban guns in the United States. One of them is arguably why the 2nd Amendment is in the Constitution to begin with.