How Do I File A Complaint Against An Immigrant?

How Do I File A Complaint Against An Immigrant? For assistance with USCIS immigration filings or applications, submit an inquiry online or contact the USCIS Contact Center at 1-800-375-5283 / 1-800-767-1833. Can I complain to immigration? Suspected immigration benefit fraud and abuse related specifically to applications and petitions before the U.S. Citizenship and Immigration Services