U.S. Citizenship and Immigration Services (USCIS) has revised the filing instructions for the Petition for Alien Relative (Form I-130). Effective immediately, all petitioners filing stand-alone Form I-130s must file their petitions with the Chicago Lockbox instead of a USCIS Service Center. The revision to the instructions of Form I-130 became effective on January 31, 2008. As of April 30, 2008, all stand-alone Form I-130s submitted to any location other than the Chicago Lockbox will be rejected.