Not all Muellers are made in China, the Tac II is made in Japan.
Others are built in China, have Japan made glass and who knows where all the rest of the components come from. I don't care too much where a product is made so much as I care whether the product is worth the money and the mfr stands behind it if I have a problem with it. I have 6 Muellers so far, I've had no problems with any of em. From all I've read on them, Mueller is tops in warrantee coverage on the few that I've read of that had problems. I don't see where it's made as being an issue if you get more than what you paid for as is the case with Mueller Optics.
Do you have any electronics, TV, etc in your home??? Take a guess where a lot of em are made!!
40yrs ago consumers shunned Japan made products, well, China is today's Japan.
Tim