Typically, when a U.S. citizen or legal permanent resident petitions for a non-citizen spouse to obtain a green card, U.S. Citizenship and Immigration Services (USCIS) does not require an in-person interview until late in the process.
After submitting the initial petition Form I-130, and when USCIS decide about this first step, it will wait until you submit the remaining paperwork. Upon gathering all documentation, USCIS will schedule a meeting with him at one of the USCIS offices or an overseas U.S. embassy or consulate.
However, USCIS can schedule an interview before deciding on the I-130. In this case, USCIS will require you as a petitioner to attend and speak with a USCIS officer. With the last year’s announcement, USCIS has two aims:
1. To protect the interests of a minor (under 18), and, therefore, considered vulnerable.
2. To make sure that the marriage is bona fide.
Marriage laws differ across the United States, and in some, marriage involving a minor is prohibited or permitted, but only in certain circumstances. Since many people are misusing marriages to apply for a lawful permanent residence, marriage fraud is an ongoing concern for U.S. Citizenship and Immigration Services and the Department of State.