"Smoot-Hawley" is not relevant to our current situation because we had a trade surplus when it was passed. And trade penalties should be applied more gradually to avoid shocking markets.

I agree China cheats, and we need to do something, else they will cheat more. Economic models suggest that lopsided trade is still overall good for the "loser" side, but that's in aggregate: specific sectors can still end up with a nasty hit, like the rust-belt did.