Tariffs can either be a bargaining chip for renegotiating trade partnerships, or tariffs are designed to bring manufacturing back to America.
[emphasis mine]
Designed to bring back manufacturing to America, maybe.
Whether that's even possible remains to be seen.
My guess is not: even if the economic incentives/disincentives actually work, there's the problem that America gave away a lot of its manufacturing base as so much of it was offshored; it'd probably take years, plus a concerted, organized
and funded effort, to even start to reverse that.
One thing the China-bashers always seem to miss is this:
It's not as if China came over here with gunboats and missiles and took our manufacturing base away from us, against our will.
We gave it away to them. Quite willingly and consciously. So our bad, I think.