Can a permanent resident parent (mother or father) petition all unmarried children over 21 yrs of age at the same time?
Mother was petitioned by her US citizen sister. Got 3 unmarried children over 21 yrs of age back at home country.
How long after arriving at the US before they can petition their children and is it possible to petition them all at the same time?
Legal permanent residents may file a family-based immigrant visa petition for their unmarried sons and daughters who are not young enough to be considered children. They may all be petitioned for at the same time. The sons and daughters would all be classified under the F-2B category. To determine how long it would take before an immigrant visa becomes available for the permanent resident's sons and daughters to come to the United States, refer to the current visa bulletin. A link has been provided below.