After the perm labor certification approval, I know that it is I-140 stage. But does I-140 go to the national processing centers [Chicago or Atlanta] or it goes to the regional processing center based on the applicant's permanent residence? How much time it is taking for I-140 approval at this point of time? Does one require "Birth Certificate" during I-140 stage? If someone could answer these questions, I would really appreciate it.
Thanks,
Sam
Thanks,
Sam