If I have already filed my I-140 petition, can I now file my I-485
application before the I-140 is approved?
Some website says : yes
E.g. http://greencardlawyers.com/greencards/adjustment/ConcurrentFiling.html#I-140_already_pending
Yes. Anytime after you have received a "Receipt Notice" for your I-140
petition, you may file your I-485 green card application. You will have all
of the same advantages (and risks) as any other concurrently filed I-485
application.
Is there any official answers in the USCIS website ?
Many thanks!
(Can not type Chinese in the current OS system.)