"Visa's unlawful conduct affects not just the price of one thing, but the price of nearly everything," Attorney General Merrick Garland said.

Visa exploits its market dominance to stifle competition, costing consumers and merchants billions in extra fees, feds allege.

The U.S. Justice Department has filed an antitrust lawsuit against Visa, alleging that the financial services behemoth uses its size and dominance to stifle competition in the debit card market, costing consumers and businesses billions of dollars.