The child is a U.S. citizen, how can the mother get there?

If your child is a U.S. citizen and is over 21 years old, he can sponsor you to immigrate to the United States. You need to wait ten years before you can immigrate to the United States. If your child is under 21 years old or is very young, then You can only apply for a family visit visa to visit him in the United States, provided that your child has been living in the United States for a long time. Currently, many children who are American citizens have been living in China for a long time. In this case, their mothers cannot go to the United States.