"Maybe these basic traps should be posted in Large Print at the entrance to each gun show, although at the risk of giving a few people 'cold feet' about buying or selling(?)."
Not a bad idea, and still entirely voluntary on the part of the operators. Post a big sign telling people to remember to not sell to; fellons, straw-buyers, or to buy guns with the intent of selling them to others (straw/dealing in firearms w/o a license). A big poster with the 4 safety laws would be good as well.
At least then I'd have something to read while waiting in line to get in...
That said, I've seen shady stuff at gun shows (not to mention safety violations
), online, and everywhere else. The goal as a gun owner is to be aware of what rules you must abide to be in this market. You can't just rely upon what makes sense due to the burdensome regulations and arbitrary court rulings we have to deal with. You need to know your stuff, so you can avoid potential landmines which may or may not be stings. As soon as you do so, you will learn just how idiotic our legal situation is, and begin agitating for more intelligent and less restrictive laws.
I have a feeling the most sting operations occur in big cities with a Bureau office, and where there is a good breakfast/lunch joint nearby. No one's gonna drive 2 hours into the sticks to some random swap meet in plainclothes, "just cuz." If the market is known to be dirty or shady, you get what you deserve by doing business there, same as you deserve the consequences you reap by sticking around an unsafe public shooting range.
TCB