The analysis from Forbes shows what multinational corporations actually pay in taxes in various countries:
http://www.forbes.com/pictures/fidj45hkdk/hey-mister-tax-man/
The effective tax rate in the USA is 2nd highest among the countries in the study. The Bahamas have the lowest effective tax rate at 5-15% depending on the size of the corporation. The USA effective tax rate is 23% for domestic firms and 28% for foreign firms. Only Japan is higher at 37% domestic and 38% foreign.