I just read this article on The Guardian:

https://www.theguardian.com/media/mind-your-language/2016/sep/09/we-need-to-be-careful-about-demanding-migrants-speak-english

In the USA I know that they're very strict on immigrants learning the language and assimilating into the society. Here in Britain we're a lot more relaxed, this has certainly caused some problems, but then in London you can hear more languages being spoken on the street than in any other country in the world...

How does it work in your country?

Do you think it matters?