I stated that you need to speak English to get ahead in the US. How many people that run large companies or are in the Senate or House of representatives have a poor command of English? Very few, and probably not too different from 100 or 50 years ago.
I recounted an anecdote of people who felt a sense of loss at having been deprived of the opportunity to learn their ancestors' language.
And I asserted that not teaching children a language so that they can 'fit in' is a very tragic thing to do, because you are making a choice for them to deprive them of something they'll never really attain on their own later in life. This is, of course, my own opinion, and needs no citation.
The point of all this is that ranting about "them" not wanting to "fit in", is exactly what leads to kicking people like Gus out.