Can I adopt my niece (17 years old) and apply a green card for h

My brother and his wife may go back to China. Their daughter, 17 years old, are in the last year in high school. They all are Canadian citizens.
I am working in USA. I have had my green card for 2.5 years. Can I adopt my niece (17 years old) and apply a green card for her?
If yes, how long may it takes?
Thank you!

所有跟帖： 

• Practically Almost impossible -NRG2- ♂ (0 bytes) () 02/12/2007 postreply 15:20:41

• 回複：Can I adopt my niece (17 years old) and apply a green card -我想哭我更氣- ♂ (64 bytes) () 02/12/2007 postreply 15:34:16

• Adoption is OK,but if you want to apply immigrant benefit -xiaobaitu- ♀ (63 bytes) () 02/12/2007 postreply 16:42:31