Supreme Court rules for AmEx

The Supreme Court has affirmed lower court decisions that resulted in antitrust judgments against Visa and MasterCard. The decision clears the way for banks that issue Visa or MasterCard to also issue Discover and/or American Express.

Also, interesting facts from the article:

Visa has 323 million accounts, MasterCard has 264 million, Discover has 50 million, and American Express has 37.5 million, according to the companies.

Visa cards are 10 more times likely than AmEx. Huh.