Some of the bureaucratic barriers that currently exist to travel between countries are issues related to:
security and
geopolitical conflicts.
Some measures to minimize or abolish these bureaucratic barriers could be:
the implementation of analysis and planning of the tourism sector,
establishment of development policies and measures that make the country safer and more stable in order to encourage tourism.
The tourism sector is essential for certain countries to increase their source of income, it is therefore necessary to establish positive publicity for tourist destinations in the countries, facilitating visa approval and reducing bureaucracy to encourage tourists to get to know the country.
Those snakes affect the ecoystem because they need food so they go down and become a predator and hunt for food. If they bite people depending if its venomous then they'd seek medical help