No, they are vague. Typically, if you are going to use tariffs to promote an industry you do very targeted tariffs. One great example is the "chicken tax" that we have in the US, where we charge a 10% tariff on any light duty vehicles (pickup trucks and SUVs) being imported into the US. At the time we implemented the chicken tax, as I recall, the plan was to protect/promote our chicken ranching and to protect the US truck manufacturing from cheap imports. Just, for some reason, we've kept that tariff in place for 60 plus years (yet are complaining about car import tariffs other nations have that are the same or lower than the "chicken tax" -- a bit of hypocrisy there).
By putting blanket tariffs on countries, not on specific products, you have not plan or a very vague plan. We aren't going to bring every industry back and likely don't want to. For example, as I mentioned elsewhere, clothing manufacturing typically does not pay as high of wages as heavy industry, so it likely is an industry we aren't rushing to return to the US -- yet the tariffs on clothing are the same as on cars, as on steel (which we need to build cars), on Rare Earth metals (needed to build any number of higher tech products), etc.
And this is yet another example, if we are wanting to increase US auto manufacturing, than it makes no sense to tariff things like steel, iron, and many other imports, since those tariffs raise the price on the materials manufacturers need to build cars -- making it less likely we'll increase our manufacture of cars.
First, what made our trade deficits unsustainable? They weren't unsustainable -- so long as we generate enough income in the US to pay other countries for the goods we import, than they aren't unsustainable. And we were creating more than enough value in the US to pay our bills. As others pointed out, in many cases the countries that had large trade surpluses with us were using them to invest in US bonds.
Don't get me wrong, I'm not saying that running large trade deficits is not something we wanted to change, or even that it is a good thing. It just wasn't some type of emergency problem that requires a "quick fix." There is no ledger where we had to "pay back" what we were negative in the deficit -- we don't work on a bartering economy where we have to trade X amount of goods for Y amount of goods from another country. Instead, we just paid dollars for what we were getting and the dollar has a high enough value to allow us to pay for those goods.
As for the previous administration, they were getting factories built. Some of it was from the Inflation Reduction Act, others from the CHIPs act. In both cases, new factories were built (at least 181 investments in manufacturing from the Inflation Reduction Act; and multiple new and expanded fabricating plants to build computer chips, with billions in investment, because of the CHIPs Act. As others have tried to say, this is what happens when you have an industrial plan and create policy/law to get companies to invest in those plans.
It was a bit ironic watching Republican leaders who had voted against these bills then go to a ground breaking for the factories and
claim they made the investments happen for their districts (one example). And as Trump has brought up that Congress needs to repeal these Acts by Biden, Congressional Democrats
aren't wanting to do that now.