The problem is, we need BOTH Visa and Mastercard to get onboard, because if only one does, all the “mark of the beast” idiots will go to the other company.
But if both allowed implants, where would those idiots go?
American Express 
I mean they are stupid, but not THAT stupid
Although, most of the mark of the beast idiots are probably from America, as are likely most of the users of American Express, who are also likely the Americans who don’t even want to travel outside of America.
American Express is SHIT for travel, I got one when I traveled around China and Europe, and it was fucken useless
Fuck you American Express, Never again…unless you do implants, Then, I will still hate you, but I will use you