Mom is going to get married in America, and then can the children go together?

According to the US Immigration Act 3963-8 1, children under the age of 20 can leave the country accompanied by guardians and become American citizens after living for five years. Live in the United States for at least three months every year during your stay. During his stay, he enjoyed the rights of residents, but did not enjoy some American policies of benefiting the people, that is, welfare, and no minimum living allowance. Other rights are equal to those of American citizens.

I have just returned to China, and I hope I can help you.