A free trade agreement (FTA) expands economic opportunity in foreign markets for American workers and businesses, while doing the same for their foreign counterparts in our market. The increased trade improves the overall economy of each country. But, in order to avoid unwanted side effects, modern FTAs do more.
Perhaps those claiming that the U.S. may one day be energy-independent will be proven right. Perhaps as tight oil production begins to wind down, other alternatives will be found in sufficient quantities (and at an affordable price) to make up the difference, and the U.S. economy will continue growing. Perhaps.