You're framing this as if China growing economically were a bad thing for the US. The US engaged in trade with China because from an economic perspective, that

You're framing this as if China growing economically were a bad thing for the US. The US engaged in trade with China because from an economic perspective, that was mutually beneficial. This helped China to grow economically, which is only a "problem" if your view is that the US should politically dominate the globe indefinitely. Unwinding the economic relationship between China and the US would be immensely damaging to both, but American politicians bent on maintaining American hegemony might attempt such a thing.