I know of many with dual citizenship (Brits, Irish, Canadian) - you have to *formally renounce* your citizenship, and a minor cannot do that.
Ball back to you....
They probably have citizenship Jus sanguinis (of blood) or Jus Soli (of soil) of those countries laws. Europe in general has strong Jus Sanguinis laws and Canada has strong Jus Soli laws, so that’s why your friends probably have dual citizenship. I know for sure that you can never lose your Irish citizenship.
However, The U.S. government does not have any strong Jus Sanguinis or even Jus Soli (Of soil) laws. If you become a naturalized citizen of any other nation, you automatically lose your American citizenship.
When Obama was adopted, he became a naturalized citizen of Indonesia. When you’re a naturalized citizen of another country, you automatically give up your U.S. citizenship. Therefore, he’s not a citizen of the United States of America, and that’s why probably, like I was hinting in my other thread, he committed perjury when he was applying for his bar exam. He didn’t want anybody to know that he used to be Barry Soetoro of Indonesia. If he did, he would have been deported from the United States of America.
Therefore, Barack Hussein Obama II, is not eligible for the office of the presidency of the United States of America.