www.uscis.gov. U.S.Citizenship and Immigration Services today " U.S. Department of Homeland Security" for political purpose by Mrs.Napolitano--Make an Appoitment and report the card number lost or stolen. On Case Type box write Aplication to Replace Alien Registration Card. For security purpose, when you go to the Appointmet Support Center to have your BIOMETRIS taken bring Photo ID and any change of information--bring evidence to support your change (e.g.,marriage certificate, etc).Biometrics for a Resident Card is the most secure information in the world, so if you have any warrants,or international issues, it will be shown in 1 1/2 min. Dimitra, you can buy/fake a citizinship document,an ID's State Card, passports but belive it or not, alliens registration cards are the most secure US document. That's becouse USCIS employees' work is been watch constantly strong policies and regulations are follow by many private citizing in charge of review all this information. Others US goverment members reviewing "the review" - are Judges, attorneys, police officer on suspension. This process should be follow by other goverment agencies. Even checking, investigaring the future president's backgroud-- Is time to act like" WE THE PEOPLE!