They are probably all cast overseas, even the Oregon ones.@smokey,
I have probably replaced 10 or more carburetors with the 12 - 1500 ones., all working great.
You will always get people that prefer to use only a certain brand, and that is fine if it works for them. I was not even aware that Oregon manufactured carburetors here in the US. I thought just about all of them are now made overseas.... ..