The other side of the coin
Argentines visiting the US have to apply for a visa. The application form costs the same as the fee for Americans to enter Argentina (thus the "reciprocity" of the "reciprocity fee"). Applying for this visa can be a highly traumatic experience (ask anyone. Not only Argentines). You are in the hands of a, often power crazy, menial civil servant. If he or she decides not to give you a visa you are not even allowed to know why and much less appeal. And you don't get your money back. The US authorities refuse to inform on how many applicants are rejected.
Argentines are the fifth biggest population visiting Miami every year with about half a million tourists. This year there are many restaurants and apartment rentals that are accepting PESOS at the official rate of exchange!