Under the current official FAQ, a spouse and unmarried children under twenty-one may be included in the initial application, with an additional processing fee and gift for each person. An adult child needs an independent route. Re-verify those terms before any money moves.
The over-twenty-one question has to be asked directly
The current official FAQ permits an applicant or corporate sponsor to include a spouse and unmarried children under twenty-one in the initial application so they receive the programme's expedited processing and resulting privileges. It currently requires an additional processing fee and gift for each included family member. A child in their twenties does not fit that provision and needs an independent route with separate requirements and timing. Because the programme's terms can change, the household should re-read the official FAQ immediately before applying or moving money and have a licensed U.S. immigration attorney confirm the position.
Where a household's plan depends on a particular treatment of a child approaching adulthood, obtain written confirmation before committing funds, since a transfer of this kind cannot be reversed once the answer turns out to be different from the assumption.