However, 32 US states do declare English as their official language. That's certainly more homogenous than the EU, the original point of contention. Just 2 of 28 EU states declare their official national language as English, and only one of these has English as their only official language (indeed, only the UK has English as their official EU language, which means English may no longer be an official language at the EU level after the UK leaves).
In the US, half of all states have English as their only official language.
This is all barely to the point, though (language is only a small part of culture). While the US may not be homogenous, it is clearly more homogenous than the EU, and by a large margin. The attempt to suggest otherwise was just absurd.
https://en.wikipedia.org/wiki/Languages_of_the_European_Unio...