Fortune: Last year 55 Fortune 500 companies paid no U.S. income tax. How can they get away with that?

Last year at least 55 major, profitable U.S. corporations paid no U.S. income tax, reports the Institute on Taxation and Economic Policy. Some are famous —Nike, FedEx, Salesforce.com—and all are in the Fortune 500 or the S&P 500. How can they get away with that? Read more