I wonder how they would enforce such a policy?

I dare say that if I was discovered concealed that I'm doing something way wrong - but it has happened and I've corrected those mistakes.

So I'm assuming that the retired guy at the door is not only going to greet you but also direct you to the x-ray machine and then wand you afterward.

Then there's the question can a private company overrule/regulate state law? Could they also post a sign in the parking lot prohibiting deadly dangerous SUV's, which after all, kill many more people each year than legally concealed firearms...

Bottomline is that it's a feel good sign for the liberals that doesn't do a thing to prevent crime at all.