A USC may file for AOS for parents here.

The earliest you may file to remove conditions is 90 days before the conditional green card expires. You do not want to apply earlier and risk...

Your home address is not in Canada. Use US home address as mailing address on DS-160.

Your cautious plan and approach are fine. Good luck.

All documents supporting effort to remove conditions on CR, as well as a current passport are sufficient for reentry.

It depends on what you mean by ...."
Because it will take some time for me to come back to USA." You are still subject to continuous and physical...

By calling USCIS at 1-800-375-5283, and request EB-2 Priority Date be transferred/applied to the currently pending EB-1 I-485 AOS.

It appears you have a family preference case. Your application will move forward when the visa petition PD is current and visa available. The...

You must be a lawful permanent resident to sponsor your spouse for a green card.

You have to wait for further directions from USCIS. It is not a good idea to submit unrequested documentation to USCIS.