The following video is part of our daily MarketFoolery podcast, in which host Chris Hill and advisors Jeff Fischer and Joe Magyer analyze the latest business news. Visa's latest earnings spur a discussion about the global opportunity for credit card companies, including American Express, Discover Financial Services, and MasterCard.

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This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.