WASHINGTON — A federal court judge on Tuesday posed several tough questions to parties involved in retailers' lawsuit against the Federal Reserve Board's implementation of a law setting a cap on debit interchange fees.

The case centers on whether the central bank appropriately set its cap of roughly 21 cents in line with a statutory directive in the so-called Durbin amendment of the Dodd-Frank reform law.

Subscribe Now

Access to authoritative analysis and perspective and our data-driven report series.

14-Day Free Trial

No credit card required. Complete access to articles, breaking news and industry data.