I believe only the 440V are made in the Golden location as of this point. However, I hear they plan to expand the US location to allow more models.
The problem is getting some of the metals over here is expensive, and thus cheaper to have them done over in Seki City, Japan.
Carlos, Sal, or other <img src="http://spyderco.com/forum/spyder.gif"> crew can give you a better answer though.