In most of the US, credit card surcharges (charging customers a higher price when using credit cards than when using cash or debit/bank cards) are legal. Is it

In most of the US, credit card surcharges (charging customers a higher price when using credit cards than when using cash or debit/bank cards) are legal. Is it also legal to charge customers a fee based on what type of card they use? A large number of customers have multiple cards anyway, so that would be a meaningful incentive.