"American Jews are NOT treated like Americans"
Incorrect. Scrutiny is properly applied to people with ties to countries that regularly spy on us. Even though we are allies, Israel is prolific, and generally successful in spying on us, so ties to Israel are scrutinized.
Ties to the UK, Canada, Australia, for example are generally no given as much scrutiny because those countries do not spy on us, rather, we have extensive intelligence sharing agreements
I think that most American Jews would agree that America is probably the best place in the world to be Jewish.
If you think otherwise, as you apparently do, you are just wrong.