Unions are not only feasable they are necessary. The erosion of the middle class is directly attributable to cheap overseas labor and he reduction in the power of unions. There is an oversupply and devaluation of middle class labor caused by the migration of jobs offshore and the lack of negotiating power. Instead of providing raises for workers wealth has accumulted in the top few percentile. One in 7 Americans now lives below the poverty line yet we have more millionaires than ever. Traders churn the capital and residual wealth of yesteryear and invest it in "emerging economies" like China.
In the end we will consume what we produce-and we don't produce much. We import energy and manufactured goods and in the end hope our American-ess will keep us rich. We won't be able to use 20 million barrels of oil a day, have Chinese slaves mke our DVD players and Iphones, while we buy McMansions, drive Hummers, and work at aimless but high paying jobs.
Like it or not we are now in a "global" economy and we need to seriously compete (which we can't and maintain our standard of living) or engage in protectionism.