"Based on static analysis, a number of studies argue that forming a regional trade agreement is more likely to raise welfare if member countries are "natural trading partners," while other studies claim that the opposite is true. Schiff and Wang look at the argument from a dynamic viewpoint by...

How firms react to a given shock may depend on the degree to which rivals are present and on whether potentially viable entrants to that market exist. A preferred supplier market presence and threat of entry lessen a nonmember country's price reaction to most-favored-nation trade liberalization...