The Bureau of Western Hemisphere Affairs helps the US make nice with its nearest neighbors. It implements US foreign policy in North and South America, including the Caribbean, by encouraging democracy, free trade, and sustainable economic growth. It also works on stopping crime, reducing poverty, and protecting the environment by partnering with nations that are stable and prosperous, fighting terrorism and drug trafficking, and interested in democratic values. Other regional topics include the Organization of American States, the Commission for Assistance to a Free Cuba, Summit of the Americas, and the Central America Free Trade Agreement. The Bureau is part of the US State Department.