I was thinking about this. All South American countries and Central American countries and Mexico, except Brazil, could form an EU-type of setup. Any thoughts...
Most of the governments, which are of course tied to the economy, are too unstable to synthesize right now. Remember what happened to Alberto Fujimori? I've got a somewhat personal connection.
Maybe in at least 20 years the idea can be brought back. Any federation now, in my humble opinion, should be very limited.