It took more than a decade and three presidencies, from Ronald Reagan to Bill Clinton, to conceive and craft the North American Free Trade Agreement. Will a single presidency manage to undo the process of North American integration? While the risk is real, the reality may be less dramatic. The Invisible Hand of Geopolitics Just as in economics, there is an invisible hand in geopolitics that shapes the behavior of our politicians and business leaders. Individuals bend to the world, not the other way around. And North America has long been bending toward tighter integration. The continent’s combined population of 484 million is spread out across a landmass more than twice the size of Europe. At its heart is the world’s largest naturally integrated river system overlaid by arable lands, a foundation for an empire and a prize claimed by the United States.