Two pieces of legislation are advancing simultaneously through Congress, each targeting the consumer credit card market, each premised on a fundamentally different theory of what's wrong with it. The market has been pricing them as companion pieces. They are not. They represent competing structural bets — and the portfolio implications diverge sharply depending on which theory wins.
Theory One: The Credit Card Competition Act
The CCCA — sponsored by Senators Durbin and Marshall in the Senate, supported by a bipartisan House coalition — would require credit card issuers above $100B in assets to enable routing competition: merchants could choose between at least two unaffiliated networks for credit card transactions, the same competitive structure the Durbin Amendment imposed on debit in 2010. The argument: interchange fees have risen from roughly 1.5% to 2.5% of transaction value over the last decade, adding approximately $750 per year to the average American family's costs through pass-through pricing.
The financial architecture implication: if interchange rates fall under routing competition — as they did for debit after the Durbin Amendment — the revenue pool that funds credit card rewards programs contracts. The airlines, hotels, and travel companies that have built co-brand card economics into their revenue models face the most direct exposure.
Theory Two: The 10% APR Cap
The competing bill — proposed as a separate legislative vehicle — would cap credit card APRs at 10%. The political framing: average credit card APRs have risen above 20% as the Fed raised rates. The structural implication: at a 10% cap, the economics of lending to subprime and near-prime borrowers become mathematically negative for most issuers. Credit card availability contracts for approximately 45 million consumers who currently hold credit cards and whose credit profiles require risk-adjusted pricing above 10%.
This is not a modification of consumer credit. It is a structural exclusion event — removing the portion of the consumer credit market that depends on risk-based pricing from access to revolving credit.
The Cross-Domain Connection
The airline loyalty revenue connection is the signal that most credit analysis is missing. United Airlines generates approximately $5.9B annually from its co-brand card agreement with Chase. Delta generates $7.0B from its American Express agreement. American Airlines: $5.9B. These are not ancillary revenue streams — they are the primary profit source for the three largest U.S. carriers. If interchange compression reduces the economics of co-brand card programs, the airlines face a revenue model disruption that has nothing to do with fuel prices, load factors, or labor costs.
Who's Exposed
Capital One and Discover (now Capital One post-acquisition). Capital One has the highest proportion of near-prime credit card borrowers among the major issuers. An APR cap at 10% is a business model elimination event for a specific segment of Capital One's portfolio that the current market is not fully pricing.
Airline co-brand card programs. The CCCA's interchange compression creates a revenue risk for the three largest U.S. carriers that doesn't appear in their segment disclosures.
Who Wins
Fintech lenders with alternative credit structures. If revolving credit access contracts for 45M consumers under an APR cap, the demand for installment credit, BNPL, and earned wage access products accelerates. These are not substitutes — but they are the available alternatives.
Merchants with high transaction volumes. CCCA routing competition reduces their interchange costs directly.