USC and children in foreign country

I am a USC and my daughter is in other country.
What are the paperworks I have to file so that she will become a USC automatically? She's under 18. Also, I have 2 stepsons under 18 and I would like to know what should I file for them.

I am a USC and my daughter is in other country.
What are the paperworks I have to file so that she will become a USC automatically? She's under 18. Also, I have 2 stepsons under 18 and I would like to know what should I file for them.

HOW OLD IS YOUR DAUGHTER?

6 y/o

[Umesh Passi]

To rdoc45 :
First of all you have to file I-130 for each child (your daughter and your step-childrn) separately. When they will come here and get their green cards, at that time your daughter will be elegible to file for N-600 Certificate of Citizenship. Your step-children will not be eligible to file for N-400 unless your spouse becomes Citizen. Children under 18 years of age who are permanent resident of the United States and whose both biological parents or one of them is USC can file for Certificate of Citizenship. First thing is to bring them in the United States.
Good luck.