I'd suggest Gearwrench or Tekton, Wright or Williams (same manufacturer as Snap On) if you want American made.
Plus, Gearwrench is not american made, it is Taiwanese. Good tools, but your statement is factually incorrect.
I think that's just ambiguous wording. Try parsing it like this:
> I'd suggest ((Gearwrench) or (Tekton, Wright or Williams (same manufacturer as Snap On) if you want American made.))
Gearwrench, Tekton and some Williams wrenches: Asia-made, reasonably priced, more than adequate for hobbyist use.
Wright and some Williams wrenches: US-made, more expensive but cheaper and more available than Snap-on, marketed towards industrial applications instead of professional mechanics.