I have no custody of the children born by my ex-wife, and the children are under the age of 18. Can immigrants take it away?

Immigrants after divorce, as long as they are under 18, need the consent of their children's mothers before they can be included in the immigration application. In fact, even if the custody is in your hands, you need to get the consent of the child's mother. When we submit an immigration application, we need to attach this consent form.

In addition, don't say that children born by ex-wives, even illegitimate children, can be taken away as long as they can really prove that the children are yours. Just need the mother's consent.