I should know this because I work for a bank, I guess....but I thought it was illegal for businesses to refuse US currency? I could be wrong, I probably am... But many moons ago when I sold cash Management services, we shut down a few operations that put minimum limits on debit/credit card transactions. Not really the same... But it was limiting transactions for the benefit of the business..
I suppose if you can refuse gay people cake.mm you can refuse money?
Talk to me...I'm on conference calls all morning.