My wife and 2 children(both below 20 yrs) are scheduled for an interview on an E visa. The priority date is indicated as Aug 2000. My question is, if the priority date is in 2000, and my son who is 26 now (but was 20 y/o in 2000) can avail of this also and be included in my petition? If not any other route possible for him other than marrying a US citizen?. I am a GC holder only not a US citizen.