If you fail to qualify in any of the eligibility criteria once that is cleared out you can go ahead and reapply. You need to be 18 years of age with good conduct and have had the green card for at least 5 years with continuous physical presence in US too.
No, the US Supreme Court is not currently considering any cases questioning Barack Obama's US citizenship. These claims have been thoroughly debunked and rejected by multiple courts in the past.
If you apply for citizenship in another country your US citizenship is automatically revoked. The US does not recognize dual citizenship. You revoke it in writing at a US embassy, outside the US.
Yes, The residents of US territories have US citizenship
Attaching false support documents could be a reason for application rejection. One of the main eligibility criteria to apply for US citizenship is 'good moral character'. Hiding wrong doings or not telling truth about past events could also result in rejection of application. Not paying the correct filing fee also could be a reason for your application to be rejected when you apply for US citizenship.
The US recognizes dual citizenship.
No. The US president MUST have US citizenship only.
If you are born in the US you obtain US citizenship by birth. Another way to obtain citizenship is through the naturalization process by applying for US citizenship using Form N-400 if you are eligible.
Yes, it is possible to lose your US citizenship if you voluntarily renounce it, commit certain acts of treason or fraud, or obtain citizenship in another country with the intention of relinquishing your US citizenship.
Yes dual citizenship is allowed for US citizens.
Mark Zuckerberg did not renounce his US citizenship. He did, however, give up his US citizenship while acquiring citizenship in other countries to avoid double taxation on his assets.
US citizenship can only be renounced in writing at a US embassy (i.e. outside the U.S.). Be sure you have citizenship in another country before doing this.
NoSee US Citizenship and Moving Abroad.http://www.richw.org/dualcit/faq.html