The corruption perceptions index (CPI) is a comparative assessment of integrity performance for a variety of countries. What is CPI? What is its purpose? What is the value of this index? What are the trends or similarities between countries with the highest and lowest CPI 2011 scores? What can be done to overcome corruption in the global marketplace? Research three trade restrictions currently in place by the U.S. and basis the research, answer the following questions: Are these restrictions a tariff, subsidy, import restraint, voluntary export restraint, or embargo? What is the purpose of this restriction? Is the restriction achieving its purpose? Why or why not? Solution Corruption Perceptions Index (CPI) exhibits the ranking of different countries as per the extent of their corruption level. The data required to prepare the rankings is collected by 13 different experts and business surveys conducted by independent and reliable firms. The index is prepared using the administrative and political aspect of different countries. The value of this index lies between 0 and 10, out of which 0 denotes high level of corruption in a country. Contrary to this, 10 refer to low level of corruption. From the CPI 2011 scores of different nations, it is concluded that developed countries rank higher in corruption level as compared to developing countries. Countries having highest CPI include Denmark, Finland, New Zealand, Sweden, and Singapore. Whereas, countries having lowest CPI includes Somalia, Afghanistan and North Korea, Myanmar, Sudan.