Hello I need advice on filing the green card on behalf of my mother. My mother has a green card and i would like to apply for mine on her behalf. But the problem is i am already more than 21 years. So if any one could give some advice on how long does it takes to get approved if i applied for the GC on behalf of my mom. Wat the possibilities of approval and the duration of the approval. If anybody has been thru this process please let me know. Thanks