We used to hear, 30 or 40 years ago, that the USA did not allow dual citizenship. Or that the USA didn't used to allow it, but now it does.
Here is the deal. Who decides who has citizenship in France? France does. Who decides whether someone is granted citizenship in Botswana? Botswana.
If I'm the government of Guacamolepeonda, and I declare that all people with red hair are citizens without need of a passport or paperwork, that red haired people setting foot on our soil are citizens... the USA has nothing to say.
As explained by the US Department of State website:
Here is the deal. Who decides who has citizenship in France? France does. Who decides whether someone is granted citizenship in Botswana? Botswana.
If I'm the government of Guacamolepeonda, and I declare that all people with red hair are citizens without need of a passport or paperwork, that red haired people setting foot on our soil are citizens... the USA has nothing to say.
As explained by the US Department of State website:
U.S. law does not mention dual nationality or require a person to choose one citizenship or another. Also, a person who is automatically granted another citizenship does not risk losing U.S. citizenship.If a red headed American sets foot in Guacamolepeonda, perhaps by accident, he/she is at that moment a legal citizen of Guacamolepeonda under out Guacamolepeonda constitution. You have the right of due process in the USA to defend the revocation of your citizenship. So you are, no matter what, a dual citizen for the amount of time the USA revokes your citizenship.