Does anyone know if American citizens need a VISA for overland bus travel through Paraguay? I was thinking about taking a bus from Iguacu to San Pedro de Atacama. The bus crosses the border in Ciudad del Este, which I know has no border control, and it just travels through Paraguay without stopping, than crosses into Argentina somewhere outside of Asuncion. Will we get in trouble at the Argentinian border if they catch us without a Paraguayan VISA? As US citizens, do we need a Paraguay VISA if we are only passing through by bus without stopping?
The bus also travels through a peace of Brazil, which also requires a VISA, however I read that around the Iguacu Falls area, people can cross to the Brazilian side VISA free, as they know a lot of tourists just visit the Brazilian side of the falls for a few hours than go back.