The USCIS will merge both applications pending and will issue a respective document to the applicant once processed.

A Petitioner's Birth Certificate would suffice for that purpose.

Leave as soon as practical as you are accruing unlawful status in the United States.

Research, compare and select a licensed immigration attorney of your choice to go over each line entry before you submit it.

Based on your description your mother stayed aboard for over one year and legal abandoned her LPR status. Thus, by operation of law, you have to...

No, that Notice of Action is not sufficient. Consult directly with an attorney of your choice also you do not get sent back to your home country.

How about consulting with a reputable licensed attorney to complete that process correctly?

Until your personal criminal background clears without any "derogatory hits" you will not be scheduled for taking the Oath to naturalize.

All inquiries shall be delegated to the counsel of record vested with the professional duties to handle that process.

There is no legal method to support you mentally seeking to sponsor your brother and his family members that would fit the desired timeline for...