Thanks for the information.
QUESTION: I wanted to know if it would speed up the process if we applied for her children prior to her citizenship or after?
ANSWER: Since you were married before the children turned 18, and the children most likely have not reached the age of 21, then you can petition for them directly, the way you did for your wife/their mother. She dos not have to do it, and you don't have to wait until she becomes a US citizen. They are immediately eligible for their green cards through the immigrant visa process. However it will take several months to complete the processing of the immigrant visa.
QUESTION: I also need to know which form to use? From past answers I've noticed that you had recommended form I-130 which does not apply to our case? Can you please confirm?
ANSWER: The correct form is the I-130, Petition for Alien Relative. The petition belongs to you, and it is filed on their behalf. They are your alien relatives, because they are your step children.
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