Allows nationals from the countries in Mercosur such as Chile, Peru, Bolivia to be able to migrate, either temporarily or permanently, and to be more integrated regionally. While increasing cooperation between the states, this mechanism also means that all the members of Mercosur will be naturalized regardless of their migratory status.

The agreements that Ecuador has with Peru and Venezuela, for example, make it easier for citizens from all three countries to stay and work in neighboring countries.