There are two ways to become a U.S. citizen: one is to by having a U.S. birth certificate or a birth certificate with a U.S. citizen parent’s name on it; the other is by naturalization.
One could apply for naturalization after becoming a green card holder for five year with at least 30 months residence in the U.S. (3 year for U.S, citizens’ spouses after obtaining their conditional green card.) After passing naturalization interview, one could take the Oath of Allegiance to become a U.S. citizen. Certain elderly could waive the naturalization language interview requirement if meet the waiver requirement.
There are many advantages as a U.S. citizen, i.e. applying for federal government jobs, enjoying free health care, right to vote, tax benefit, certain federal funded student financial aid, etc.
NKL provide services for naturalization consultation, documents submission to the USCIS, interview preparation; help clients to obtain children’s U.S. birth certificate; help China origins parents to obtain travel documents for their U.S. born children.