Coca-Cola (KO -0.8%) and McDonald's (MCD +0.2%) say they will waive their right to tax-free...

Coca-Cola (KO -0.8%) and McDonald's (MCD +0.2%) say they will waive their right to tax-free earnings at the Olympic Games in London after groups in the U.K. protested vigorously. Though the change will have a very minor impact on earnings, it follows a trend for both companies of seeing their involvement in the games come under assault after spending a pretty penny for the right to be sponsors. (Previous: Olympic sponsors under fire for obesity complaints)