[Secret Agent Man]

If you are a subject, you’re not a free person, I don’t care how “free” they declare the country to be.

[nickcarraway]

Bingo.

[Winniesboy]

Many Americans seem to remain convinced that the concept of 'subject' still exists in the UK, when it lost its last vestiges of legal or constitutional meaning over a century ago, and de facto long before that. British citizens are British citizens.