I doubt most Chinese immigrants to the US are agents for CCP - but some are.
@mountaineer Depends on what "class" they are. Class is VERY important in communist countries.
Any who come here that are college-bound with no manual labor skills,are spies. This means ALL the ones who come here on student visa's. In fact,most,if not all of them,are actually officers in the PLA who are sent here to spy and send things like technical and scientific text books back to China while they are here attending college.
The ones who come here as refugees with their familes are almost all good people. It has been MY experience with working-class Asians that NOBODY works harder to succeed,or is more honest. Frankly,we could use a lot more of them. These people escape the oppression in China because they have ambition and there is no place in any communist country for ambitious people not born into political families. Their fellow workers hate them from having ambition and making them look bad. ANYBODY that stands out in a communist country is going to live a life filled with grief.
People like that also tend to become the most patriotic Americas you will ever meet once they come here and get to "fly free".
This is especially true of Asians. For example,look at what all the 1st generation Americans whose parents immigrated to here from Japan in the decade or so before WW-2. A more patriotic group of Americans would be hard to find.
BTW,I have zero percent Asian blood in me,and nobody in my family is even married to an Asian.