Hi, I would like to know what is the upper age limit for my children to be eligible to apply for a dependant Green CArd . I am on L1A. Please also advise me if my children and wife could apply for a GC without applying for L2 (dependant visa on L1A)
A child can be added as dependent only if unmarried and below the age of 21 years.
Going back to your original post - your children seem to have crossed that age limit and may not be eligible for GC through the depdendent route.
They may not be eligible for L-2 visa as well if they are above 21 years of age or if married.