Credit card transactions cost American merchants six times as much as cash transactions. Why, then, do consumers pay the same price for purchases, regardless of the means of payment?The answer lies in a set of credit card network rules known as merchant restraints. Merchant restraints forbid...

Transparent pricing is a prerequisite for an efficient, competitive market and responsible consumer behavior. If the card industry were required to price its products in a straightforward manner, and it were less costly for consumers to switch cards, deceptive practices would be harder to...