If NAFTA made this agreement, people would be able to travel easily within Canada, the United States and Mexico. Unskilled workers in Mexico would migrate to "El Norte", in search of better paying jobs. The supply of workers in Mexico will decrease dramatically. Only the terminally ignorant, or those with family in Mexico, would remain in a poor country and earn low wages. On the other hand, the US labor supply will increase dramatically. Canada's job supply would not change dramatically, because it is very similar to that of the United States, only further away. The amount of workers moving from Canada to the United States and vice versa would not be severely affected, however, if the United States' supply of workers became too large, workers could migrate north to Canada to find work. High school economics teachers would be able to work in any of the three countries, as the same basic knowledge of economics is required. I think teachers in Mexico would choose to move to the United States or Canada if they knew their native language well, because the salary would be much more rewarding. The supply of economics teachers in the United States and Canada would increase, slightly decreasing salaries. The supply of economics teachers in Mexico would decrease, so salaries for economics teachers would increase slightly. Equilibrium wages for economics teachers will remain about the same and employment will be high. For carpenters, again, I think wages in the north would be higher. Since carpentry does not involve extensive education and focuses on the talent and skill of carpenters, workers could easily move to another country. If all of Mexico's carpenters decided to "run for the border," the supply of carpenters in the United States and Canada would increase dramatically. Wages for skilled carpenters in Mexico will increase, while in the United States and Canada they will decrease slightly. If too many Mexicans moved north there would be high unemployment, because we would have a lot of skilled workers and not enough jobs to meet their needs. People will eventually want to return to Mexico, because with the supply of skilled workers so low, wages will be slightly higher. For gynecologists, I think the United States or Canada would be the preferred destination, simply because our healthcare is so much more advanced.