I cannot see how someone with good foreign income can willingly subject himself to Argentinian taxation. Tourists stamps for as long as possible then settle nearby where foreign income is not taxed.
Same in Paraguay and Brazil. It is perfectly legal to enter the country anywhere as long as one is authorized to do so and does not carry false documents. As far as US is concerned, you get arrested for illegal entry.
After Wikileaks and more recently Hillary's emails, nothing nyt writes can be taken at face value. This specific piece is full of emptionatal phrases and characterizations, pure fiction and propaganda. Contemporary videos conflicting with nyt narrative are ignored.