Not quite. We would have to ban all food products that include any ingredient made in China no matter where the food product was finally produced. There is no way for consumers to tell where individual ingredients in a processed food product are obtained by a food manufacturer. Another way would be to prohibit food manufacturers who sell in the American market from buying any of their ingredients from China -- that would certainly throw a wrench in our trading relationship with China! China is not the only problem, however. Our dependence on a massively centralized and highly processed food industry makes us very vulnerable to food contamination problems(either accidental or deliberate).
The best defense for consumers is buy as little processed food as possible and to rely on locally grown foods whenever you can. We desperately need to decentralize and diversify our food supply in this country for national security as well as health reasons.
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Good advice.
I think we have to realize that the western world long ago enacted "pure food and drug" laws and we all assume that the food we buy is free of contamination. The rest of the world does not share this assumption.