Heritage provides a chart showing that as of April 1, 2012, the U.S will have the highest corporate tax rate in the developed world.
Our high corporate tax rate has long made the U.S. an uncompetitive place for new investment. This has driven new jobs to other, more competitive nations and meant fewer jobs and lower wages for all Americans.
Other developed nations have been cutting their rates for over 20 years. The U.S. did nothing.
Read the rest at Heritage.