Wow, cool, I rarely get to discuss political philosophy on these boards
In an article called "Sugar Shaft", George Will discussed the recent closing of Fanny Farmer and Fanny Mae candies. This is due to the higher cost of sugar in the US versus the world market. The reason the cost is higher is because of sugar tarrifs designed to protect American sugar farmers. As a result of protecting American industries, we lost jobs.
We've seen massive job loss before as industries relocated. Textile and Automotive are key examples. But in the 90's no one noticed as new markets had opened up. Markets will shift, trying to protect jobs will only make the problem worse.