(p. 249) Gary Clyde Hufbauer, Cathleen Cimino, and Tyler Moran evaluate “NAFTA at 20: Misleading Charges and Positive Achievements.” . . . “Ample econometric evidence documents the substantial payoff from expanded two-way trade in goods and services. Through multiple channels, benefits flow both from larger exports and larger imports. . . . The (p. 250) channels include more efficient use of resources through the workings of comparative advantage, higher average productivity of surviving firms through ‘sifting and sorting,’ and greater variety of industrial inputs and household goods. . . . As a rough rule of thumb, for advanced nations, like Canada and the United States, an agreement that promotes an additional $1 billion of two-way trade increases GDP by $200 million. For an emerging country, like Mexico, the payoff ratio is higher: An additional $1 billion of two-way trade probably increases GDP by $500 million. Based on these rules of thumb, the United States is $127 billion richer each year thanks to ‘extra’ trade growth, Canada is $50 billion richer, and Mexico is $170 billion richer. For the United States, with a population of 320 million, the pure economic payoff is almost $400 per person.” Peterson Institute for International Economics, May 2014, Number PB14-13. http://www.piie.com/publications/pb/pb14-13.pdf.
Taylor, Timothy. “Recommendations for Further Reading.” Journal of Economic Perspectives 28, no. 3 (Summer 2014): 249-56.
(Note: first ellipsis added; other ellipses in original.)