A friend on his first trip with us was going to bring his gun. He has a carry permit and always has it on him. We discussed the matter pre-trip. He was appalled that he couldn't take it. But, left it at home. It's worth discussing the matter before you go. One other issue that I've seen reports on in Baja Nomads is knifes. In some cities you can be arrested for carrying a pocket knife. Some say they have been harassed for having a folding knife within their reach in the cab of the truck. So, put your knives in your shave kit or tool box, etc. Other than these two major issues it's pretty much like the US. Seat belts, Don't talk on the cell phone while driving and don't drive drunk.