Bassbob
Emissary
IT DEPENDS ON THE JURISDICTION.
Some states, those signs DO carry force of law. KNOW YOUR LOCAL LAWS.
Here in Maryland...they do not. Same as posted above - we can be asked to leave, and refusal will result in a trespass charge, but that's all (as long as you are licensed to carry).
Just make SURE you know your local laws, or the laws for anywhere you are traveling to or visiting.
It appeared to me he was talking about his state. And I know I was talking about mine. These signs carry no legal weight here. However, if you are asked to leave and you don't ( this incidentally includes being asked to leave for ignoring a " Must wear mask" sign) it is trespassing and the police will remove you and charge you with a misdemeanor.