Globalized production and supply chain systems took years to build and will take years to unravel. Lots of products and their component parts haven't been made anywhere in the US in decades, so the capital infrastructure would have to be rebuilt. That's difficult, expensive and time consuming even if you can get producers to go along. Biggest problem of all is getting Americans use to higher prices after decades of cheap and cheaper from leaned out supply chains connecting low cost producers. The "better quality" paradigm of the 90's and 00's doesn't work anymore as foreign producers in many industries churn out products just as good and sometimes better than their American counterparts from 40 years ago. It's a tangled web we've weaved all these year and won't get unwound anytime soon.