I think SAS still manufactures in the US, though some parts of some shoes may be done in Mexico and Italy:
https://en.wikipedia.org/wiki/SAS_Shoemakers
I over-generalized. There are these smaller show mfgrs in the US. I .e., I get my sandals from Keno in Key West, FL. Made and sold there or online. But as to what you will find in dept stores, not much made in USA.