這是移民局的正文.

If you had children before you became a lawful permanent resident, and your children did not physically accompany you to the United States, and you would now like your children to join you in the United States, your children may be eligible for following-to-join benefits. This means that you do not have to submit a separate Form I-130, Petition for Alien Relative, for your children, and your children will not have to wait any extra time for a visa number to become available