My brother is US citizen and he wants me to sponsor for green card.  Does any one in sajha is/was going through it? Can anyone tell me how difficult is it and how long does it take?

Dude, it takes 10-11 years according to the immigration customer service reps. If u r lucky u might get it in 7 years too. I f u look at the uscis.gov site on processing times for I-130 (for brother or sister) for California Service Center, they are now processing application there were filed in 2001. Not so bad, but sometimes that is forever too. Hope that helps.

yes NKC . the average time for people getting green card through this process is around 12 years.