Also, to back up Scutter's point, if an employer has a real ideological issue with this, you'd better keep in quiet that you have a gun in your car, because an employer in an at will state can fire you for any reason at all, as long as it's a reason not prohibited by law. This includes no reason at all. Then the burden of proof falls to the terminated employee to prove it was for an illegal reason, always a tough row to hoe. Go ask an employment lawyer about such a case. He'll likely tell you about the large retainer he would require to take the case.
Exactly. The moral of the story is that either before or after the law, keep it hidden and keep your mouth shut. Nothing's changed.