Every State has its own regulations for carrying a weapon. Minnesota has some very specific things when it comes to postings and what that means. These rules are really very carry friendly!
However, I faced a new one on Thursday. I was teaching a class, and the class was being held in a meeting room at a casino on an Indian Reservation. They posted the doors with the standard no guns stuff, I believe they were close in all the requirements for the postings, but they also stated fines and consequences.
I need to do some research on what the differences, if there are any, when on a reservation!