> The US is a country of immigrants who for the most part came here because they valued the individual over the community

I disagree with that statement, despite agreeing with the following:

> The individualism lives in the deepest roots of our culture.

There's a plethora of reasons people come here: freedom to express themselves, security, financial opportunity because they're literally living in squalor elsewhere, etc. I don't think a majority of people came because they _wanted_ individualism. They wanted to improve their situation and came to a country that had a pretty good marketing spiel.

Also if you look at immigrant communities in the US, they tend to be much closer than ones that have been here for generations (with exceptions). They create the community you claim is rejected when they come to the USA. The most active communities I've witnessed here are the Asian, Hispanic, and African social circles built around the culture that they left behind in their home countries. So I don't think your argument about immigrants leaving = individualism holds.