The loss of our manufacturing base is also a huge national security problem. In both world wars, many manufacturing plants that turned out civilian products were converted to the manufacturing of military products. When you need weapons and ammunition quickly, there’s no time to build a manufacturing plant from the ground up.
Additionally, there is evidence that the Chinese have installed backdoors on military microchips they sell to us.
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A while back all the American military combat boots were made in China...I suspect they supply quite a bit of what our military needs...