Maybe they shouldn't have, but the reasons were: It'll make America richer. It'll encourage world peace. (It's hard to go to war with a country you trade with

Maybe they shouldn't have, but the reasons were: It'll make America richer. It'll encourage world peace. (It's hard to go to war with a country you trade with a lot) The disadvantages of this were that high labour manufacturing left America and the poor had less jobs, and most of the wealth went to the elites and blue states. Funnily enough the politics of the red states was what prevented the (from free trade, in total greater) wealth from being spread around because it's apparently communism.