>>Regardless, tariffs as an instrument have their merit with Trump or without Trump. Strategically, US has to bring manufacturing (and as much of a supply chains) back, there is no way around it.
Well no. Not really. Not for everything anyway. Some things like electronics - sure, but it's a matter of national security not economy - it doesn't have to make financial sense, it just has to exist so that the country can have that ability no matter what happens.
As a simple(and really oversimplified) example - let's say that tariffs force clothes manufacturers to bring tshirt making back to the States. The $5 T-Shirt now costs $30 due to tarrifs. So ok, someone makes a factory in US because now it makes sense, employs american workers, pays them good wage - ok, now they make t-shirts cost $20 because they are made domestically.
Cool - that's great, but now the rest of the world still buys $5 tshirts, while Americans buy $20 ones that can't even be exported anywhere because why would anyone buy them if they have cheaper alternatives. All you've done is you increased the cost of your products to the american consumers.
Some can argue - ok, that doesn't matter, what matters is that manufacturing is now back in the states and american people have employment. And sure, there is merit to that argument - but it reminds me of how my own country used to work under communist rule, people would go "comrade party leader, people have no jobs", "ok, we'll build a factory here so you can have jobs".
Can the factory make anything that is actually worth making? Doesn't matter, what matters is that people got jobs and "manufacturing is happening here" - for an economy based on capitalist principles, that sounds like a disaster for US.
But hey, what do I know. Just an external observer.