Mayorkas said his office doesn't track incidents of fraud

Mayorkas said his office doesn't track incidents of fraud The new certificates, used to obtain passports and other legal documents, come after U.S. Citizenship and Immigration Services (USCIS) unveiled a new green card this year that had improved security features to prevent forgery and tampering.

"They are going to be very significant" technical changes, says USCIS director Alejandro Mayorkas, who is scheduled to present the new certificates at a naturalization ceremony in Baltimore.

Mayorkas said his office doesn't track incidents of fraud for immigration documents. But they felt the improvements were necessary because the green cards hadn't been updated since 1998 and the last proposed update of the naturalization certificates in 2003 didn't add any security features.