The currency used day to day in Panama is the U.S. dollar, which is also legal tender. For this reason, Panama is considered a dollarized country and was the second economy on the continent to become a dollarized economy. Panama as a country doesn't have an intentional agreement following your questions with the U.S. government, In fact, Panama City Beach, Florida, in the U.S. don't have any relation, only in the name. The U.S. E-2 visa is like the Golden Visa for Europe. You must hire an immigration attorney in the U.S. for that.
