Yes, I noticed that on the main casting on the 200CX loader frame on my 2520. Kinda rubs me the wrong way too, but that's reality in today's world. You do, I'm sure, know that these tractors (at least 2520's) are manufactured at Yanmar in Japan. All their CUT engines have always come from there and I think Yanmar even built the JD650/750/850 series tractors starting in the late 70's.
I think you got to get up into a 50+ HP tractor before you have one mostly made here in the USA. Almost all CUT's from any manufaturer are made somewhere overseas. Regardless where they're made the Deere's are still as good as anything else out there.