US Immigration Useful Websites
Access to visa bulletin.
https://travel.state.gov/content/travel/en/legal/visa-law0/visa-bulletin.html
How to check the status to a USCIS petition.
How to check the status to a case in removal proceedings.
https://acis.eoir.justice.gov/en/
NVC Inquiry form.
https://travel.state.gov/content/travel/en/us-visas/visa-information-resources/ask-nvc.html