The difference is willingness to act on said spying. Luckily, despite the massive surveillance capabilities the U.S. "Intelligence" Community has, they don't seem to really mess with regular citizens all that much. This gives some credence to the "if you have nothing to hide, you have nothing to worry about" point of view, but only if you can guarantee you have nothing to hide (which can change drastically depending on who is in power, hence why I don't believe in this - the classic example being that hiding one's religion in and around Germany in the 1930s and early 40s was not seen as important until it was really important).

China and Russia (and to some extent, the UK now) will absolutely act on the spying they do. Or just act and say they had a good reason. China and Russia are dictatorships. One of them has a very competent and hard-working population which succeeds in spite of the dictator, the other is a gas station with nukes that survives solely because of said nukes.

FISA (Foreign Intelligence Surveillance Act) Section 702

> Section 702 only permits the targeting of non-United States persons who are reasonably believed to be located outside the United States. United States persons and anyone in the United States may not be targeted under Section 702.

https://www.intel.gov/foreign-intelligence-surveillance-act/...

I bet you that China, Russia and the UK rank higher