“The invaders (cultural Marxists, or immigrants of whichever variety) are forced to pretend to have traditional American values such as honesty, good will, work ethic, etc.”
I haven’t seen them pretending at all. They’re constantly in your face screaming how awful your values are.
The unifying glue of any nation are its values, specifically it’s DOMINANT values., which defines its dominant culture.
So what were America’s dominant values that held it together for so long, It was the idea of individual freedom with responsibility.
But it wasn’t unlimited freedom, only those enumerated in the Bill of Rights. Those “rights” were sacrosanct (almost). They were outside the grasp of a simple majority. You could not undo them with an election using a simple majority.
All other freedoms not protected by the bill of rights were up for grab for the majority.
Any culture that was anathema to those rights could not make it here. Thus cultures that denied the most basic freedoms became an instant enemy. Examples of this were naziism and communism. Others would be religions that are violently intolerant of other religions or freedoms, such as islam.
For the most part most other religions, even if they taught that they were the only true religion, tolerated the others and coexisted with them fairly peacefully and they all accepted the bill of rights, and thus became subcultures accepting of the dominant American culture.
Let’s see here. In America, Naziism and Communism denied the most basic human rights and were evil and were to be opposed. Yet you did not mention Jim Crow here in the USA. Jim Crow denied the most basic of human rights. Therefore did you neglect to say that the Americans in charge of the nation were just as evil as the communist and the nazis?! Or am I missing something in the wordings?! Maybe, the nation just was not ready to extend its boundaries to all of its citizens yet. Not enough economy for every one to be included?
The ultimate test to determine which is the dominant culture is to find out which set of values supports political power and which set of values erodes political power.
By this test, we see that traditional American culture is still the dominant one: just listen to anyone from la raza or from cair, any democrat politician, etc. They pretend to support traditional American values because this is the only way their political power can be supported.