A company that sold September 11 commemorative coins supposedly containing silver from ground zero has agreed to pay 750,000 dollars (£474,683) to settle claims that it deceived consumers.
The Federal Trade Commission (FTC) said the National Collector's Mint, based in Port Chester, New York, charged customers for items they never ordered and failed to identify its wares as imitations.
A law passed in 2010 created an official September 11 medal marking the 2001 terror attacks in aid of the museum being built at the World Trade Centre site.
New York senator Charles Schumer and congressman Jerrold Nadler complained the National Collector's Mint's coins could deprive the museum of funds.
The FTC said on Thursday the agreement bars National Mint from misrepresenting its products.
Mr Schumer said the nation would not tolerate a "despicable scam".
The company's lawyer did not immediately return a phone message.