What happens if a Wickham investor's daughter turns 21 while the petition waits?

Derivative status is limited to unmarried children under 21, but the Child Status Protection Act may allow the time a petition was pending to be deducted from the child's age. Whether that preserves her place depends on the dates and on visa availability, so it should be calculated early with the actual figures.

Age is calculated, not simply counted

Hypothetical example: Ines files with a twenty-year-old daughter named as a derivative, and the daughter will turn twenty-one before a visa becomes available. The starting rule is that a derivative must be an unmarried child under 21. The Child Status Protection Act provides a calculation that can subtract the period the petition was pending from the child's biological age, and there is a requirement to seek to acquire permanent residence within a set period once a visa becomes available.

Whether the daughter benefits depends on the filing date, the approval date, the visa availability date, and how promptly the family acts, so the calculation should be run with real dates rather than assumed. If she falls outside it, she needs her own route, and a student status is the option most families examine. It is also worth remembering that derivatives receive the same two-year conditional residence as the investor and are included in the eventual Form I-829.