Do naturalized U.S. citizens honor their Oath of Allegiance to renounce their foreign citizenship?

Question

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

Answer 1

Not anymore.

Answer 2

We don't have to .

Answer 3

Depends on the country they are from.  Most foreign countries will not honor this oath as a renunciation.

Answer 4

Most foreign countries do not recognize the Oath of Citizenship as a formal renunciation of their foreign citizenships, and the US does not require them to formally renounce said citizenships either, so they keep them.

However, some countries will consider that your acquisition of US citizenship constitutes an automatic renunciation of your citizenship with them, so you have to be careful depending on what country you are from.

Edit: and yes, I know the part of the Oath you quoted, and my above statement that most foreign countries do not recognize that as a formal renunciation of citizenship remains true. In many cases, to renounce your citizenship with a country, you have to sign a renunciation paper witnessed by consular officials of that country. Each country has its own laws on that topic so it's best to check what happens to your citizenship when you acquire another, such as US citizenship.

Answer 5

Really and truly, one would formally need to sign a renunciation document in the country one is renouncing  to formally renounce former citizenship.