In WW2 we had our own steel, sewed our own uniforms, made our own weapons and ammo, made our own vehicles, and processed our own chemicals. I think you can understand what I'm saying. If we rely on any foreign nation to supply for our defense production we are screwed.
Most steel mills are gone as are most Textile and chemical processing companies. These are National Security issues. If any nation can cut our supplies like our fuel then they control us. BTW you have to figure into the manufacturing equation such things as Mr Buffets mobile home manufacturing company. It's what we are manufacturing that also matters.
Most manufacturing companies in the USA are American. Exxon Mobil, Chevron, General Electric, Ford, Chrysler, Intel, Texas Instruments, IBM, Apple, Lockheed Martin, Raytheon, United Technologies, General Dynamics, Boeing, DuPont, Alcoa, Caterpillar, Coca-Cola, Et Cetera
You will find many more foreign owned companies in China than in the USA. We do not rely on other nations for defense production. In 2010 we exported 8,641 million of arms and imported 893 million. All US military hardware must be made in the USA with US materials.
China is MUCH more dependent on foreign defense production than the USA. The new Chinese CV, Shi Lang, was an incomplete Soviet hulk that was sold to China in 1998.