Ok
A. Most manufacturing jobs, save for the narrow swath that the free trade agreements dont cover, will still end up in Mexico and Canada... but that is a good thing, because
-1. We want immigration for people who want to live here and not just work here and send money home. A booming manufacturing industry in mexico will siphon off a significant portion of people trying to get in here for the wrong reasons... that lets the border patrol focus on actual criminals and not just dipshits chasing jobs.
-2. Access to critical manufactured goods wont be across the sea in case of various disruption such as port closures or war..
-3. We can influence Mexico and Canada in regards to product safety, quality, and environmental impact far greater than the asian countries...
Mexico secretly is looking at the tarrifs as a huge boon to their economy...
The jobs that will return to the us probably will be the high tech manufacturing and things like heavy machinery..
Im not sure textiles and other bulk products will end up back here... plus a lot of that will be totally automated soon enough anyways...