Visa, MasterCard, American Express, and Discover brand consumer and commercial credit, debit, and prepaid cards issued in the U.S. generated $1.108 trillion in purchase volume in the first quarter of 2015, up 7.6% over the same period in 2014. Credit card purchase volume of $642.91 billion grew by 8.0%. Visa was up 12.2%, American Express was up 6.3%, MasterCard was up 6.1%, and Discover was down 11.4%. Credit card cash volume of $22.83 billion from balance transfers, ATMs, over the counter, and paper checks increased 3.1%. As a percentage of total volume, cash volume was 3.43%. One year...