[billakay]

US law does not require a person to formally lose their foreign citizenship to become a US citizen. The intention to keep a foreign citizenship certainly is not legal grounds to deny an application for naturalization.

Naturalization does require the following oath:

I hereby declare, on oath, that I absolutely and entirely renounce and abjure all allegiance and fidelity to any foreign prince, potentate, state, or sovereignty, of whom or which I have heretofore been a subject or citizen; ...

In practice, this is taken to mean that in the case of any conflict in responsibilities between your US citizen and any other citizenship, the US responsibilities must be considered first.

[a fool in paradise]

No dual voters. All of this immigrant dual citizen crapola is less than 30 years old.