My initial reaction is to say that as long as the integrity of those who are proposing, enacting, and enforcing this legislation is impeccable, there seems to be no problem with this. Bona fide eco-tourism, scientific investigation, anthropological study, and the like would be unaffected, merely subject to scrutiny and the issuing of internal visas.

Any legislation which sought to protect the forests of the Amazon basin, the world's principal "lung" should be supported.

But hopefully, any controls brought into force would not be subject to abuse, i.e., protecting internal over-exploitation, away from the eyes of a prying world.