Credit and prepaid consumer and commercial payment cards issued directly by American Express in the United States generated $692.07 billion in purchase volume at merchants in 2015, up 4.9% over the prior year. Credit card outstandings increased by 4.4% to $98.33 billion, up $4.18 billion over 2014. Cards issued directly by American Express grew to 47.1 million, up 2.3 million or 5.1% over 2014. Amex branded cards issued by third parties — Bank of America, Bank of Hawaii, Barclays, BBVA Compass, Citigroup, First National of Nebraska, Pentagon Federal Credit Union, USAA, U.S. Bancorp, and W...