though the situation is not very much the same, one huge country, and only three member states If the PTB are thinking region, then South America would be part of it, later. That would be closer to the EU.
PTB? The FTAA would cover the entire hemisphere, but even still, the United States alone makes up around 30% of the population of the Americas (300 million of a population of around 1 billion-- actually 935 million according to
this site.). Germany (with the largest EU population) has some 90 million to the EU's roughly 460 million (currently). (so a little less than 20% to a little more than 30%).