I had the exact same experience at the Delta counter in Atlanta. A Frenchman was having trouble understanding that he couldn't pay cash to check his bag. We pai

I had the exact same experience at the Delta counter in Atlanta. A Frenchman was having trouble understanding that he couldn't pay cash to check his bag. We paid for him (Amex reimburses us for Delta fees so we didn't take his cash) but otherwise he wouldn't have been able to fly. Previously, I had always believed that in the US it was a law that places had to accept cash.