Rough Rider, Colt, and Marbles traditional knives are dang good knives, and made in China. The Buck 371 and 389 I have are great knives, too.
So far, no complaints with the Cold Steel "G.I. Tanto" I have, it was made in China, according to the tang stamp and packaging.
As others have stated, any knife conpany can make a high quality knife, regardless of what country they are located in. Rough Rider has a reputation for being razor sharp out of the box, and for excellent fit and finish; comparable to Case, in fact. The company that owns the Rough Rider brand (along with the Colt and Marbles brands, as far as I know) Buck, Cold Steel, CutCo/Ka-Bar, Ontario, and other American companies that have products (not just knives) made in China or any other country, tell the factory what level of quality they want , and they are willing to pay to get that level of quality, and they reject product that does not meet their specifications.
"Made in USA" is, sadly, is no longer a guarantee of high quality. The USA is just as capable of manufacturing (in house) crap that even a dirt poor 3rd or 4th world peasant would reject as not worth the 1/2 cent price, as producing (in house) products fit for royalty.