What form a US citizen use to sponsor her stepchild to bring to usa .the child is 9 years old?

Your wife should file the I-130 petition for alien relative in the US, which petition should be approved by U.S.C.I.S., and then go through processing at the National Visa Center in the US before being transferred to the home consulate or embassy for your daughter to be interviewed and issued the immigrant visa. The process takes approximately one year.Due to the limitations of the Lawyers.com Forums, Alan Lee, Esq.'s (the "Firm") participation in responding to questions posted herein does not constitute legal advice, nor legal representation of the person or entity posting a question. No Attorney/Client relationship is or shall be construed to be created hereby. The information provided herein by the Firm is general, and requires that the poster obtain specific legal advice from an attorney. The poster shall not rely upon the information provided herein as legal advice nor as the basis for making any decisions of legal consequence.