By comparison, the average corporate tax rate among nations in the Organization for Economic Cooperation and Development stands at 25 percent.

Politicians and pundits often talk about companies moving operations to more friendly corporate tax countries, and they are right to do so. The corporate tax climate in the U.S. is a major factor in companies' decisions to move abroad.

Some of those companies are uniquely American, but have relocated nonetheless. Here are just six examples:

1. Burger King

While Burger King does not directly cite taxation as its motive for moving, it is clear it will benefit. It is reported that between 2015 and 2018, Burger King could save $275 million in taxes.

In 2014, Burger King Corp. purchased Canadian fast-food restaurant Tim Hortons Inc., and soon thereafter moved its company headquarters to Canada, where the net corporate tax rate is a mere 15 percent.