If you asked 100 Americans who the PM of the UK is, I'd bet maybe 1 or 2 would know the answer.
The UK is not discussed here. Your country is irrelevant to our news media and conversations about general culture. I live in the 3rd largest city in America and interact with more Irish-nationals than UK.
If you don't believe me, come visit. Go ask people about the UK. You will hear a mix of the Crown, the Queen, Princess D, Megan gossip, and stereotypes about bad teeth.
I'll gladly meet you and show you around.