Kids born in the US are citizens by birth. The certificate of citizenship should be got as proof for the same. Form N-600 can be used to get the citizenship certificate.
3 years of being permenent resident then you can apply
Basic criteria to apply for US citizenship is to be 18 years of age. If you were born in US you qualify to get the certificate of citizenship by applying for it using Form N-600.
Serve in the US army.
Must be a citizen of the U.S., must be a resident of the U.S., must be at least 18 years of age, must be registered to vote (except in North Dakota).
Yes, a child who was brought to the U.S. at age 2 may be eligible for U.S. citizenship later on, particularly if they meet certain criteria. If they have lawful permanent resident status (a green card), they can apply for citizenship after five years of residency. Additionally, if they are under 18 and a parent becomes a U.S. citizen, they may automatically acquire citizenship through the process of derivation. It's important to consult with an immigration attorney for specific guidance based on individual circumstances.
If you have been in the US for more than 5 years as a legal resident and over the age of 50, I believe, the citizenship is automatically granted but you still have to memorize and pass the citizenship test.
5 Yrs as a legal resident.
No you must be a citizen.
Yes, the child is eligible. The child is automatically a Citizen of the United States under the Immigration and Nationality Act ("INA"), Section 320!
According to http://www.america.gov/st/usg-english/2008/January/20071128090847abretnuh0.9317591.html, the requirements are US citizenship for at least 9 years, 30 years of age, and a resident of the state he/she is being elected from. I believe that the dual citizenship does not change anything.
As far as i know the parent would have to first become a citizen, moving them from legal resident status, once the parent files for US citizenship he/she also files for the underage child/ren. the under age child/ren then automatically become citizens the same time as the parent. This is what my father in law and many others i know did when they migrated to the US.
If you are not a resident, you are probably not a legal resident, however, you might be a legal resident of the last state where you lived. It depends on circumstances. The question of citizenship is a different question. If you moved the Greece as a child, you may need to choose between one or the other.