United Kingdom - Passport & Nationality - British Citizenship and USA
A birth in the United States of America does not normally give rights to British nationality, as it was treated as a "Foreign Country" for British nationality purposes ever since its independence. However, where a parent or grandparent was born in the UK, Northern Ireland or the Republic of Ireland, it is possible to have claims to British citizenship in the modern day.
The most common routes to British nationality for those born in the USA are as follows:
The most common routes to Irish nationality are as follows:
The UK, Ireland and the United States allow Dual nationality - the right to hold more than one citizenship.