The Soviet Union did not fall. The Nomenklatura pulled the plug and gave the country to the Oligarchs. The Soviets, with their dependence on petroleum exports to generate foreign capital, were struggling due to the manipulation of energy prices between 1973 and 1991, but the society hardly fell apart. The Soviet Union, while integrated with various levels of the US economy throughout it's history, was not an integral part of the US economy, exept as a driver to increase the value of defense expenditures. China is the US manufacturing base, except of course for advanced armaments. Do you suppose that even with a decline in Chinese productivity that another even cheaper pool of highly controlled labor exists? The race to the bottom has already run through SE Asia and Latin America. Next stop the Island of Dr. Moreau?