Hello @jmanuel_gtez jmanuel_gtez,
There are a few documents that are called out as required for submitting an application for change of status to legal permanent resident (LPR) or green card. These documents are sited on the instructions to the form(s) I-130, I-864 and I-485. SimpleCitizen also provides articles detailing these requirements in our Learning Center for the I-130 and the I-485.
For the beneficiary (the person filing the I-485 for legal permanent residency):
- Criminal history and Police clearances
- Birth Certificate
- Passport style photos
- Biometrics services
- Medical Examination
- Form G-325A, Biographical Information sheet
- Affidavit of Support/Employment Letter
USCIS Instructions to Form I-485
http://www.uscis.gov/sites/default/files/files/form/i-485instr.pdf - Page 3, 4, 5
For the Petitioner (the US Citizen filing the I-130):
Document showing that you are a US Citizen.
"If you were born in the United States, a copy of your birth certificate, issued by a civil registrar, vital statistics office, or other civil authority."
Documents showing the Petitioner's relationship with the beneficiary (Person trying to obtain legal permanent residency)
"If submitting an I-130 for a spouse, submit the following documentation:
a. a copy of your marriage certificate.
b. If either you or your spouse were previously married, submit copies of documents showing that all prior marriages were legally terminated.
c. A passport-style color photo of yourself and a passport-style color photo of your spouse.
d. Any other relevant documentation to establish that there is an ongoing marital union, for example: documents showing joint ownership or property; or a lease showing joint tenancy of a common residence; or documentation showing co-mingling of financial resources (bank statements); or birth certificate(s) of child(ren) born to you, the petitioner, and your spouse together; or affidavits sworn to or affirmed by third parties having personal knowledge of the bona fides of the marital relationship.
IF you have a child:
a. Submit a copy of the child's birth certificate showing your name and the name of your child."
USCIS Instructions to Form I-130
http://www.uscis.gov/sites/default/files/files/form/i-130instr.pdf - Pages 2, 3
For the Financial Sponsor:
"A copy of your individual Federal income tax return, including W-2s for the most recent tax year, or a statement and/or evidence describing why you were not required to file. Also include a copy of each and every Form 1099, Schedule, and any other evidence of reported income. You may submit this information for the most recent three tax years, pay stubs from the most recent six months, and/or a letter from your employer if you believe any of these items will help you qualify."
USCIS Instructions to Form I-864
http://www.uscis.gov/sites/default/files/files/form/i-864instr.pdf - Page 16
NOTE: There are other documents that may be required based on your status. SimpleCitizen is a Do-It-Yourself tool and is not a substitute for an attorney. If you have further questions please seek out help from a licensed immigration attorney.