Citizenship - Dual?

Question

Can you hold dual citizenship with one of these Northern Ireland, Britain, Ireland along with a U.S. Citizenship?

Answer 1

http://immigration.findlaw.com/immigrati...

Here's a little bit of info from the US side of things.  Are you already a US citizen and want to become a citizen of one of those other areas?  If so, you'll have to track down their rules.

The US doesn't formally recognize dual citizenships, because basically your US citizenship will trump all others.  But it doesn't disallow it either.  The second page tells you how you can lose US citizenship.