Gun restrictions: company responses
For example, Visa, which published a 71-page paper in 2016 espousing its “corporate responsibility,” could easily change its terms of service to say that it won’t do business with retailers that sell assault weapons, high-capacity magazines and bump stocks, which make semiautomatic rifles fire faster. (Even the National Rifle Association has said it would support tighter restrictions on bump stocks.
If Mastercard were to do the same, assault weapons would be eliminated from virtually every firearms store in America because otherwise the sellers would be cut off from the credit card system.
There is precedent for credit card issuers to ban the purchase of completely legal products. Just this month, JPMorgan Chase, Citigroup and Bank of America banned the use of their cards to buy Bitcoin and other cryptocurrencies.