You will need a Form I-130, which you can download for the USCIS website if they're outside the US. Form I-539, Sup. A and Form I-693. USCIS website has info.
Well to get a green card for your parents you can get them to apply on some kind of work visa and as immigrants if they work in the United States of America they should be able to get a green card after about 5 years of so. So the green card will be fine.
File an immigration petition. They may receive an immigrant visa number. They can file for an immigrant visa. That is all, thankfully, out the window if you are here illegally.
Form I-539 is if they already have a Visa. add a comment