If a child is born in US, are their parents eligible for green card ??

No. Wouldn't that be a disaster if people started having kids to get the green card?

Yes, after a child is 16 yrs old.

gurkha age is not 16 yrs old, it is 21 yrs.

oh my bad. thanks jonny

Both of them are incorrect it is 18.

In other words, when the child turns 21, he first needs to claim his US citizenship based on the fact that he was born in the US. Subsequently, as a US citizen, he is entitled to apply for his parents' residency. He can also apply for his siblings. But the processing time for family applicaitons are quite long, I think and the person sponsoring residency of the family should have sufficient income to support them financially when they arrive in US. At the age of 21, this might be a bit far fetched. So it is not as straightforward as it may seem.

Mathematically, it will be 22+ years if one is to opt for residency by bearing a child in the US... :-)

 

Or 19+ years as per americanboy if that makes you feel any better.

The correct age is 18 years. After the 18th birthday, the child-turned-man/woman can sponsor his parents.

There is one more provision thru which parents can obtain a GC based on the child's birth in the US - if the child is disabled during birth the parents are eligible to apply.

Hope this helps.

Good Luck.

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

That is a very scary thought HappyFace,
""if the child is disabled during birth the parents are eligible to apply""
some parents may go through drastic measure to get their Green Card.

I have checked this many times and I know for fact that the age is at least 21 years.  Check this from the USCIS web:

If the sponsor is a U.S. Citizen, they may petition for the following foreign national relatives to immigrate to the U.S:

• 
  
  
  
  • 
    
    Husband or wife
    
    
  • 
    
    Unmarried child under 21 years of age
    
    
  • 
    
    Unmarried son or daughter over 21
    
    
  • 
    
    Married son or daughter of any age
    
    
  • 
    
    Brother or sister, if the sponsor is at least 21 years old, or
    
    
  • 
    
    Parent, if the sponsor is at least 21 years old.

http://www.uscis.gov/portal/site/uscis/menuitem.5af9bb95919f35e66f614176543f6d1a/?vgnextoid=0775667706f7d010VgnVCM10000048f3d6a1RCRD