The difference is the intent of the US negotiators.
Trump might hire those with the US’s interests in mind.
The ones we have today do NOT have the US’s interests in mind.
China didn’t ‘do’ this to us. ‘We’ did it to ourselves.
Unfortunately there is no such thing as free trade, as China’s competitive devaluation just proved. So we are stuck with managed and negotiated deals. That is the best we conservatives can hope for.