Personally I think all import tariffs should be ZERO for any nation that reciprocates. (See Also historical info about the Common Market and EU).
This is the foundation of the "United States", somewhat lost over time, but a primary objective for the creation of the US constitution was to prevent states from creating tariffs on products from other states. Generally this promotes economic growth all the way around, but actually promotes more growth in the areas that can produce more desired output for less money.
Here's the problem (and one of the things Trump was angry about). You sell me your electronic widgets there is no tariff I get cheap stuff. We make really good widget making tools, I can sell them to you with no tariff but you subsidize your tool makers that make inferior products so because you can get locally made tools so much cheaper you don't buy mine even though they aren't as good.
Pick your product lines going back and forth. All countries even ours do this crap but traditionally the US has been a dumping ground for inexpensive foreign products and our products are blocked through various means by those same nations. Food is a biggie. (See also Japan and Rice tariffs).
The point is, it just isn't that simple. NAFTA was not really as awful as Mr Orange intimates, but USMCA is actually better and much more fair for the US. This is actually pretty important, it's one thing to sell your cheap panels to me, but without some reciprocation, you just bleed off wealth from me to you, and yours is the only pot that gets bigger. And no matter what is done, someone is not going to be happy about it.
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