I believe that dealing one on one on the bilateral agreements is probably the option of choice because of the peculiarities of each of the countries' economies and the level of trade and investment we have with each of those countries.
In some circumstances, this is not an option. In the case, for instance, of MERCOSUR, the member countries had agreed that any negotiation would be on a regional basis. So any negotiation on a treaty agreement with any of the members of MERCOSUR has to be done on the basis of what they call “Four Plus One”.
So in some cases we have no choice. In some cases, if the choice is available, I believe that doing bilateral agreements, the way Mexico and Chile have done with a significant number of countries, is a more conducive way to better serve the interests of both countries.