That's a good question for the state of Vermont Bennington County.

Receiving unemployment, without more is not disqualifying for natz.

In general, two different applications may proceed simultaneously. There is no harm working with a lawyer.

Sure, you can but with supporting documentation. You don't want to surprise reviewing USCIS officer.

Contact embassy/consulate and request policies about submitting the IV medical.

He may use the statement. USCIS will review the entire case and communicate a response to the petitioner.

Travel abroad with a pending I-751 waiver is not a wise idea. Postpone travel abroad until decision is made on pending application.

You may contact the issuing DMV agency to confirm, DL extension based on your immigration status.

Parent/stepchild relationship is not permissible to file the N-600, by USC parent.

Yes, but with caution. You must understand the reason(s) for denial. Carefully reviewing denial with lawyer would be wise. Good luck.