Broad Brush
Even Case outsources. Buck outsources to China.
Some.
Case still makes their own stuff. Maybe not all of it, but certainly a lot.
Buck still makes their own stuff. I live across town from the factory. Yes, they outsource (offshore) some of their stuff. Not all. Not even most.
Kershaw makes many (possibly most) of its knives in the US. Some are made in Japan (and have been for decades) and some are made in Taiwan and/or China. But their flagship pieces are made here and Japan.
Cold Steel? I haven't been tracking them, so I don't know how much of their stuff is made Stateside. I'm aware that several items are imported.
Gerber has taken, I would imagine, most of their stuff to China/Taiwan. Early production runs were trash. I went off the Gerber brand quickly. Last year I picked up (for cheap) a Gerber/Harsey design, made in China. The quality is coming back. I'm still mad at them, but I kept the knife.
If the point is "well, everybody does it" then I would point out that, for those companies that do, not all imports are manufactured to the same standards. Whoever is making stuff for Buck is doing a darn fine job.
U.S. Classics and Rough Rider are surprisingly good. Kershaw's stuff holds their standard.
Some of the imported stuff? Real junk.
I would caution buyers that they need to pay attention to the quality demanded or imposed by the "client company" when they have their stuff made overseas. I no longer worry about the Buck and Kershaw imports. I'm not happy that they feel they need to outsource to compete, but I'm glad they ride herd on the factory to keep the quality up.
Nowadays I proceed on a case-by-case, brand-by-brand basis.
In the fifties and sixties, it was "common knowledge" that the stuff out of Japan was junk. We took that for granted. We laughed. We scoffed.
And they proceeded to kick our quality-control butts across a broad range of industries. "Japanese" became synonymous with "high quality."
Yes, I continue to support, where I can, the US makers.
I'm not, however, gonna laugh at China.
Once was enough.