If you are a legal permanent resident (LPR), or a green card holder, you can petition your unmarried child (21 years old and older) to immigrate to the United States by applying for an F-2B Immigrant Visa. The Law Offices of Michael J. Gurfinkel, Inc. can provide legal assistance for you and your child. We have handled numerous similar cases and can help you navigate the process, starting with determining eligibility and requirements, analyzing the steps, and the submitting of documents.