NAFTA and comparative advantage: What does the example of NAFTA, the United States has exported larger quantities of high-tech goods (for example, advanced construction equipment) to Mexico while importing more low-tech goods (for example, vacuum cleaners) from Mexico. What does that suggest about the US versus Mexican comparative advantage in the production of construction equipment? Of vacuum cleaners? Could such examples be consistent with the Heckscher-Ohlin model? What are the potential benefits and costs of NAFTA for US and Mexican workers? Consumers? Owners of productive resources other than labor