Why is there such an uproar about the confusion that would be caused by a few States having slightly different laws concerning illegal immigration enforcement, but not a care in the world about the myriad gun laws that exist in the 50 States? With the millions of different gun laws, you are breaking the law in one State, but not breaking it in another. This exists in almost all States, Counties, Municipalities. Let's work towards getting a good (excellent) National Gun law that recognizes open carry, concealed carry, etc. The only exception I can think of is if an owner of private property posts a sign prohibiting firearms in his establishment. He has the right to post the sign and we have the right to picket. See how easy it is?