MasterCards from Florida-based Stonegate Bank are the first U.S.-issued credit cards that can withdraw cash at ATMs in Cuba Stonegate issued about 500 cards, mainly to Cuban Americans who travel to their homeland and U.S. businesses interested in the Caribbean island The card can be used at hotels car rental agencies and some restaurants, but thousands of retail shops are still not accepting it Obama loosened restrictions on financial services to reduce risks U.S. travelers face from carrying large amounts of cash, but little has changed However, until this month, no U.S. bank would back credit card transactions