Although, you may file petition for your children even if they were not included in your previous applications with CIS, however, I imagine filing petitions for them at this time may invite CIS' scrutiny as to why they were not named in your applications initially. Also, as a K-1 principal, if your children are under 21 years old, you may be able to file K derivative status for them. In this situation and to avoid costly problems further down the road, I suggest that you consult with an experienced immigration attorney
Answered on Aug 09th, 2013 at 2:34 PM