This has very little to do with politics. I don't think there can be any serious debate about who is more authoritarian and who has a worse record in terms of h

This has very little to do with politics. I don't think there can be any serious debate about who is more authoritarian and who has a worse record in terms of human rights in our times. But: - There is no guarantee that a backdoor introduced by the US will only be used by the US, or by someone with whom the US has willingly and knowingly shared knowledge about the backdoor. For all we know the MSS might be spying on some citizens using US backdoors in US chips. - There is no guarantee that the US will always use a backdoor introduced by it for morally infallible reasons. That's a risk with any weapon, of course, and it's super easy to write it up under the cost of doing business -- right until the cost of doing business involves your own device and your own life. - Even if you trust the checks and balances of US government completely, there is no guarantee that all governments with whom the US would share the backdoor have the same checks and balances in place. It's not like the backdoor will ask an attacker for their US passport and a search warrant before allowing access.