Brazil requires Americans to have a visa but it's the only country in South America to do so. Others charge a reciprocity fee - Argentina, Chile, Bolivia, and p

Brazil requires Americans to have a visa but it's the only country in South America to do so. Others charge a reciprocity fee - Argentina, Chile, Bolivia, and possibly others. But you can pay it when you land and they don't always charge it depending on whether you enter in a big city or a small border town.