Manufacturing lead times are huge. E.G. Offhand CPUs take something like 5-7 years from initial plans to final tapeouts / production.
That's not even considering the issues of planning, permits, installing machines, training workers, etc, in a more down to earth facility like a generic food plant, or heck forbid something seriously regulated (I hope) like making prescription drugs.
You'd mentioned a _timeline_ of manufacturing. I'm pointing out that usually investment has a lag time and giving some examples of lag times I've seen mentioned in publications before to parallel my supposition...
That real impact from investment may be 5-10+ years from the initial funding allocation.
Less red tape, easier to manage 'processes', fewer environmental / labor relations...
It's those last two, impact on the commons and unfair worker treatment, that are examples of where I _would_ support reasonable tariffs. Particularly if funds from those tariffs went to remediating the impact and were agreed to (also observed) by a majority of other leading countries / economic blocks.
That's not even considering the issues of planning, permits, installing machines, training workers, etc, in a more down to earth facility like a generic food plant, or heck forbid something seriously regulated (I hope) like making prescription drugs.