Do you think that people are like ants in a colony, just a mindless, agency-free extension of their birth country (I don't think you'd like the consequences of that being applied by the world to you...)?
Do they magically and permanently re-align their allegiance the day that they get a green card? Or is this the kind of mark of Cain that they'll never be able to cleanse?
You've outlined your problem, great, what's your solution?
There's no shortage of this kind of suggestive wink-wink-nudge-nudge eyebrow-wiggling, but nobody ever seems to want to say out loud what they think should be done about it.
China has many modern-day heroes that are unsung, doctors like Li Wenliang, journalists like Li Zehua, businesspeople like Fang Bin, that came forward with crucial information when Covid-19 first occurred, or various politicians like Bo Xilai who revealed cracks and inefficiencies in the CCP's management.
When discussing nation-state threat actors, this is 100% how they behave and act.