Sooo maybe Free Trade isn't all good

The point of Free Trade is not to charge a "tariff" (a tax on imported goods from another country). For example NAFTA (North American Free Trade Agreement) The United States, Canada, and Mexico all agreed not to tax goods that are imported and exported into eachother's country's. The company and manufacturers can then sell the product at a decent price and receive a nice profit. PROBLEM! People are greedy!!! American companies (typically) will run factories with underpaid workers, to increase their profits. Ignoring the ethical reason why this law was passed, but how often does that happen??? The workers are suppose to take home a substantial check being able to thrive off of. The companies instead increase the space between rich and poor, never giving them a chance at a middle class life. Of course this becomes a trend and all the big corporations want in. Companies send jobs to third-world countries to give workers there lower wages, avoid environment regulations, and avoid other labor laws. This then kills our economy because the jobs are leaving us! So a few guys get rich, third world countries have starvinng economies and dies forest, and we get a product we cant buy without a job!!!
Simple rproblem solve... i think not.