On October 5, 2015, USCIS started applying secure laminates to some of its secure immigration forms. These secure, transparent laminates offer an extra layer of fraud protection and authenticity to the forms. They contain state of the art technology to limit counterfeiting, prevent tampering and allow for quick, accurate authentication.
Forms affected by this change include Form I-797F, the Transportation Letter, and Form I-512L, the Parole Authorization Letter.