This is purely straight from my own experience. I recently received conditional permanent residence. You must refer to the website of United States Citizenship and Immigration Services (USCIS),
http://www.uscis.gov/, for the most accurate package, or you may consider consulting an attorney before proceeding with the filing.
Below is a list of documents you should submit to the Chicago lockbox. You must include all the documents and fees in your package; please avoid mailing multiple packages for your application unless otherwise requested by USCIS for additional Request For Evidences (RFEs), mailing multiple packages could cause your case and its applications to be misplaced, displaced or lost. Fees can be made payable to "United State Citizenship and Immigration Services". For the filing fee associated with each form, please refer to the USCIS website,
http://www.uscis.gov/.
Marriage Package
Cover Letter
Table of Content/Index Page
Exhibit 1 - I-130 (Petition for Alien Relative)
Exhibit 2* - I-864 (Affidavit of Support Under Section 213A of the Act)
Exhibit 3 - I-485 (Application to Register Permanent Residence or Adjust Status)
Exhibit 4** - I-765 (Application for Employment Authorization)
Exhibit 5*** - I-131 (Application for Advanced Parole)
Exhibit 6**** - G-325A (Biographic Information [of the Petitioner])
Exhibit 7***** - G-325A (Biographic Information [of the Beneficiary])
Exhibit 8****** - I-693 (Medical Examination of Aliens Seeking Adjustment of Status)
Exhibit 9******* - G-28 (Notice of Entry of Appearance as Attorney or Representative)
Exhibit 10 - Marriage Certificate
* Exhibit 2 must include the following documents: Employment Offer Letter or Employment Verification, Recent Pay Stubs and income tax return forms from the past 3 years of the Petitioner. For pay stubs, you should provide at least the 3 most recent months. For income tax return forms from the past 3 years, you can get it from your accountant, or you can go to the Internal Revenue Services (IRS) website,
http://www.irs.gov/, to find out ways to request submitted income tax return forms from the IRS. The Petitioner must meet the minimum requirement set forth by USCIS and other government agencies; the minimum financial requirement is the poverty line, which can be found on the USCIS website,
http://www.uscis.gov/
** Exhibit 4 is not required if the Beneficiary does not plan to work while his/her case is in pending status. Without I-765, or so called Employment Authorization Document (EAD), the Beneficiary is not authorized to work in United States. Working without EAD while the case is pending can seriously hinder your case that may result in legal consequences. It is highly recommended that the Beneficiary applies for the EAD, unless the Petitioner's or the Beneficiary's financial circumstances permit
*** Exhibit 5 is not required if the Beneficiary does not plan to travel outside of United States while his/her case is in pending status. If the Beneficiary wishes to travel outside of United States while the case is pending, he/she must have Advanced Parole (AP) in order to re-enter United States. If the Beneficiary exits United States while the case is pending without AP, the Beneficiary may be denied of entry or the case may be voided by USCIS. Pending Status is generally referred to as the period between the date of the filing and the date of the Adjustment of Status (AOS) Interview
**** Exhibit 6 must include copies of the following documents: birth certificate and copy of US passport of the Petitioner
***** Exhibit 7 must include copies of the following documents: birth certificate, passport and legal presence documents of the Beneficiary. If birth certificate is not available from the country of the Beneficiary, you may find a list of acceptable subsitution documents from the US Department of State website,
http://www.state.gov/. If this current marriage is not your first, you must include all prior marriage history, including, but not limited to, the name of your previous spouse(s), the name, gender and/or age of your child/children from previous marriage(s)
****** Medical examine can be taken by the approved doctor's offices, clinics or hospitals listed on the USCIS website,
http://www.uscis.gov/
******* If you should retain an attorney to represent you, this document is required to notify USCIS that you are represented by a legal counsel. It is not required to be represented by an attorney, you may choose to file your case on your own, though it is recommend to, at least, consult with an attorney to assess your situation
I hope this helps. Good luck.