My H1B is valid till 2021 based on I-140, my husband's H1B is getting expired in August 2019 ( GC hasn't been filed yet). He went to Matamoros, Mexico to get H4 stamped, so that I can file for him to work on H4 EAD. VO asked him lot of details and documentation about me, which he has provided everything. VO kept his passport back with him and gave 221g. They asked him to wait for few days. We have no idea how long will they take to do the verification. Is there anyone who have come across similar situation? How long will it take? Your answers would be very much appreciated !!