DENVER — In a move that could presage some larger credit unions offering their members American Express cards, First Data Corporation has announced an agreement to begin processing American Express transactions.

Under the terms of the agreement, the card and payment processor will begin offering processing of American Express transactions as part of its suite of services to small- and mid-size retailers.

"First Data continues to bring innovation to the marketplace that is focused on customer-based solutions," said Brian Mooney, president of First Data Merchant Services. "Through our relationship with American Express, merchants will benefit from a single payment for all major card transactions, consolidated statements, a single point of contact for all customer service, and a one stop shop for all their payment needs."