I need information such as the petition receipt and her alien registration number.
Your wife needs to file a form G-639 "FOIA" (freedom of information act) request asking for a complete copy of your wife's complete file in IMMIGRATION's position to retrieve everything.
Kindly be advised that the answer above is only general in nature cannot be construed as legal advice, given that not enough facts are known. It is your responsibility to retain a lawyer to analyze the facts specific to your particular situation in order to give you specific advice. Specific answers will require cognizance of all pertinent facts about your case. Any answers offered on Avvo are of a general nature only, and are not meant to create an attorney-client relationship.
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File a FOIA request to obtain these documents.
Gunda J. Brost Brost Law Office This advice does not form an attorney-client relationship and is merely informative. It should not by itself be relied upon to address a legal concern.
I concur with my colleagues file a FOIA instructions at http://www.uscis.gov/sites/default/files/files/... The number may also be on a canceled check from the submission with CIS or if your spouse has been employed the number should have been recorded by her employer on the form I-9 or if you used an attorney to file for you the attorney should have a copy.
Attorney Robert Brown's (former INS Director, 1972-99) reply to your question is general in nature, and does not constitute legal advice as all facts are known to him. For specific advice or representation you should retain an attorney experienced in immigration law. Mr. Brown's reply on AVVO does not create an attorney/client relationship not constitute legal advice.