A person born in America to a British father is a dual national by the law of both the USA and Britain. It doesn't matter if the person swears he hates Britain and never wants to go there and signs a document renouncing his British citizenship. By law, he is an American and a Brit. Well, of course. Once you accept the principle that a person, simply by emerging from a womb, can be legally bound in perpetuity without their consent, ANYTHINGS POSSIBLE.
Heck, if I didn't know better I'd think you were a slave. LOL.
The reality which you ignore is that your mindset doesn't matter. In fact you are bound to it in perpetuity according to the law which purports to govern you. Protest it all you want, ignore it all you want, it will not end the fact that the USA will regard you as American (until you formally renounce it), and Britian will regard you as British no matter what you do.