Yes this is the inherent tension some miss with "we can just tariff them".

If it's some dirty industry we outsourced 50 years ago, its probably work no one here wants to do, and is being done for $3/hr. What tariff rate will make comparable say.. $15/hr US labor work? None because even if they get rid of EPA and tariff to 1000%, those jobs are only coming back via 1 guy operating 10 robots.. not as 10 jobs.

And then for more advanced industries - look at how much trouble say Intel is having or how long it took TSMC to spin up an AZ fab. You need long lead times with low economic/political volatility in which to plan and implement these 5+ year projects.

Look at how slow moving automaker supply chains are, are they bringing back jobs for 2030 production if they have no idea what the world is going to look like then?

Oh and don't forget the PHD Trump sane washing explainers favorite fallback - hey it's all just a negotiating trick to get leverage. OK so then, again, what business leader is making investment decisions in that context?