Under the current official FAQ, a spouse or unmarried child under 21 may apply if included in the initial application, and each family member is subject to a separate processing fee and gift. A twenty-four-year-old child is not covered. Re-verify these terms on the official page before money moves.
Ask the official source about your own household
Hypothetical example: a Grand Bay-Westfield couple assume that because their twenty-four-year-old son is unmarried and financially dependent, he will be included with them. The current official FAQ says that a spouse or unmarried child under 21 may apply if included in the initial application, with a separate processing fee and gift for each family member. Their son is already over that age limit and therefore needs an independent route.
The couple should list each household member's age, marital status, citizenship and intended activity, then verify the current per-person terms on the official page before paying a fee or moving gift funds. Successful applicants receive lawful permanent residence, not citizenship, subject to eligibility, admissibility and visa availability.