WASHINGTON (Reuters) - The U.S. Supreme Court on Tuesday struggled over how to decide a challenge to a New York state law barring retailers from imposing surcharges on customers who make purchases with a credit card instead of cash.

The eight justices seemed divided over whether the state's law is a form of speech regulation and, even if it is, whether it is an unlawful restriction. Merchants have argued that New York's law and similar ones in other states