You've got to challenge your dealer a bit... I know a lot of it IS the cheap china stuff that's basically made from 44w... but if you ask and make them search a bit they will find that Deere has US made chain available. Stuff I get is Deere branded but their parts info tells them it's made in the US by Drives.
As JDSeller noted... it is also available at Shoup... and Diamond is also very good chain.
The Germans also used to make very good chain unless they've also become so efficient that they've farmed it out.
Most of the old reliable's like Reynold, Rex and Tsubacki are all junk now tho....