The embargo was codified into law in 1992 with the stated purpose of to maintain sanctions on the Castro regime so long as it continues to refuse to move toward democratization and greater respect for human rights. It is entitled the Cuban Democracy Act. In 1996, Congress passed the Helms-Burton Act, which further restricted United States citizens from doing business in or with Cuba, and mandated restrictions on giving public or private assistance to any successor regime in Havana unless and until certain claims against the Cuban government are met. In 1999, U.S. President Bill Clinton modified the trade embargo by requiring that foreign subsidiaries of U.S. companies stop trading with Cuba. He also authorized the sale of certain US products to Cuba.

At present, the embargo, which limits American businesses from conducting business with Cuban interests, is still in effect and is the most enduring trade embargo in modern history. Despite the existence of the embargo, the United States is the seventh largest exporter to Cuba (4.29% of Cuba's imports are from the US).

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