This post was in response to Iguazu Falls / Iguassu Falls

The Argentina government requires a $160 reciprocity fee payment for a Tourist Visa if you’re a US Citizen. So the cost difference between Brazil and Argentina is no longer there. Here’s a link to the information concerning the Brazil Visa fees (this link is from the US Embassy website). You’ll see it’s now the same price as Argentina’s as far as US Tourist Visas are concerned!