Every country has optimized their own economy so it's incredibly cheap for us to import shoes, or it was. Now it is not, so sure we could try to make some cheap shoes here. But now we have to make cheap shoes, grow cheap citrus veggies, make cheap computer chips, make cheap needles etc etc.

How much capacity do you think the US has to manufacture these things? and what about the supplies?

You can buy made in USA sneakers like New Balance 990 series. Generally all the materials except the sole are US sourced. Retails for $200 a pair. What kind of sneakers do you buy?

Running a manufacturing business in the US is more expensive. Consumers largely won't pay more, it's a limited market. The machinery for molding soles only makes economical sense at a large scale.

They’ll pay more if the imported shoe costs the same or more.

The US does massive amounts of injection molding. I just signed off on my molds to be cut and run this month, how much experience do you actually have with this I wonder?