European VAT is significantly higher than any US sales tax, reaching as high as 25% or more. Also, foreign manufacturers do not get any VAT credits.
Also, every person in the US can import goods to a value of $800 per day without having to pay any duties. In Europe you have much less generous rules, and sometimes the limit is €0.
I'm not American so I think they can do whatever they want.
And as long as taxes on labour exist, I don't think anybody can complain about other types of taxes. Any negative economic impact that tariffs or any other taxes have are doubly worse from taxes on labour.
America is a massive consumer, so it will likely impact other countries, too.
I've been seeing your perspective a lot lately online - that this will somehow cancel income tax. Where is that coming from? I haven't heard a single thing about that from the administration. Where is the basis?
If you want to use that for argument, you should include US sales taxes in the calculation too. Which could be fair, I guess.