Panama The Trade Promotion Agreement between the United States and Panama was signed in October 2011 and entered into force on October 31, 2012. The United States maintained a constant trade surplus with Panama under the agreement. In 2016, the United States exported $4.6 billion in goods to Panama, while it imported $3,056 million in Panamanian products. USTR US-Panama TPA Page » Peru The U.S.-Peru trade agreement was signed in December 2007. . . .