The US address would be the correct address.

Yes, it is possible for an LPR or USC to sponsor FN spouse for US residency. Mau may consult with a lawyer to review options that is suitable for you.

Yes, if PD is current and visa available for the principal beneficiary, a derivate may file I485.

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A properly and timely filed I765 extension allows continued employment until approved notice arrives in the mail.

It does not matter what type of green card you have now, the removal of conditions, filing I751, cannot be waived. Consult an immigration attorney...

Have a qualified immigration attorney review your immigration history for a safe guidance.

It depends on a number of facts. There is no harm in applying now.

If you are USC or LPR you can sponsor spouse for US permanent residency. Consult a qualified immigration lawyer for further details.

If you are a USC, receiving her a SSN is not necessary. After filling for AOS, apply for I131 to allow subsequent entries, after a short visit...

USCIS may use photos taken at your biographic examination for the naturalization certificate. It is very important to follow instructions on USCIS...