Posted by: kalopani July 31, 2009
green card
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i think it's 18 years to claim but 21 to bring parents, check this out:

If you are a U.S. citizen and at least 21 years old, you are eligible to petition to bring your parents to live and work permanently in the United States. As the sponsor of your parents, you must show that your household income is sufficient to support your family and your parents at 125% or more above the U.S. poverty level for your household size. For more details about meeting this income requirement, see Filing an Affidavit of Support for a Relative.

If you are a lawful permanent resident, you are not eligible to petition to bring your parents to live and work permanently in the United States.

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