No project milestone itself establishes derivative eligibility or a CSPA result. A spouse and unmarried children under 21 may qualify as derivatives, subject to their own eligibility.
Review the legal dates individually
An eligible spouse and unmarried children under 21 may seek derivative residence, subject to their own eligibility. Filing does not automatically freeze a child’s age; assess the applicable age-protection rules using actual process dates and visa availability. Hypothetical example: a Canadian investor in a U.S.
food-processing enterprise has an unmarried nineteen-year-old child studying abroad and a spouse who may remain in Canada until the business opens. Review derivative eligibility using each person’s relationship documents, date of birth, marital status, immigration history, and the actual petition and visa timeline. A business construction schedule does not determine whether a child remains eligible.
The first review should identify the principal’s priority-date and filing facts, then evaluate any Child Status Protection Act issue with the appropriate legal analysis and current visa availability. Preserve passports, birth and marriage certificates, certified translations, prior immigration records, and evidence needed for later immigrant-visa or adjustment processing. The spouse and qualifying unmarried children under 21 may be included under the applicable framework, but no person should be added merely because the household expects to relocate.
Ask whether family members will accompany, follow, study, or work, and separate those present activities from the future immigrant process. A common failure is waiting until a child approaches 21 before checking visa bulletin movement or required documentation. Another is treating petition approval as residence or employment authorization.
Make a family calendar that includes filing dates, documentary milestones, potential interview or adjustment steps, and conditional-residence follow-up. If family circumstances change through marriage, divorce, or age, obtain an individual assessment promptly. The investment analysis and the derivative analysis are related but they are not interchangeable.