I hear this a lot, but it strikes me as being short sighted. That only works if the status quo remains so forever. Maybe 5 or 10 years from now, relations between the Chinese and US governments gets cozier, and part of their deal includes sharing of this kind of data.

Or maybe the US government knows it can't legally collect certain information on its own citizens, but can rely on China to collect it, and then purchase it from the Chinese government.

Then there's the overall argument against: I don't want any government collecting data about me, period. It's none of their damn business, regardless of the chances of me having to interact with them in any capacity.