Stiglitz hits the whole problem right on the head and expands upon Piketty's book CAPITAL. When the US Government dropped the whole tariff scheme after signing all these foreign trade agreements, it made it easy for US Corporations to move their production overseas and offshore American jobs. This was, perhaps, the single biggest reason why the Middle Class has had their wealth transferred to foreign nations. Then, the US Treasury suffered due to the fact that these corporations could, then, keep their profits offshore and not pay the taxes on them that they owe here. Think Congress is going to do anything to reverse this trend? Stiglitz is not so sanguine on that either since our wonderful Supreme Court gave Corporations even more power over us by letting them buy the elections with the Citizens United case.