Tucson AZ field office provide combo interviews for N400 when I751 pending?

Having one interview for both I751 and N400 is discretionary and based on the officer. Best to request this at the start of interview.

Should foreign spouse must submit Public Charge form DS-5540 online to NVC?

Yes you should submit whatever documents are requested, even if optional.

It is best to refer to the USCIS Form I864P for guidance.

No this alone should not impact your case if you are applying for residency through consular processing. Best to consult with an attorney to...

Unemployment benefits or PUA for H4-EAD

No this should not impact a subsequent immigration filing.

It is difficult to say without a full review of your case. Consult with an attorney for guidance.

It is not advisable to move residence based on anticipated processing times.

Can I sponsor my parents ?

Unfortunately, lawful permanent residents are not able to apply for their parents through the current immigration system.

You will need to request a transfer of your case based on the divorce. It is best to consult with an attorney for a response to this RFE.

You may apply for a fiancé visa at this time or if you are able to get married overseas, you could initiate consular processing and begin with the...