Can an Adult USC Child apply for parent's GC?

[Pungiwalla]

Can an adult child say 16 or 18 or 21 yrs whatever they consider to be an adult age apply for parent's GC though consular processing?

 

[Bobsmyth]

You have to be 21 years of age to sponsor a parent.

http://foreignborn.com/visas_imm/immigrant_visas/bring_other_family/3bringing_my_parents.htm

 

[number30]

Can an adult child say 16 or 18 or 21 yrs whatever they consider to be an adult age apply for parent's GC though consular processing?

Yes he can, provided he shows the sufficient funds. Funds can be his own or also get co-sponsor.