The Border Security, Economic Opportunity, and Immigration Modernization Act of 2013 (BSEOIM) is very generous to both undocumented aliens and their employers who employed them (at this point it is not relevant if the employers knew or not that the employee was illegally in the country and was presenting fraudulent documents) by clearly stating that the immigrants can use records of their employment to support their application requirements. Based on this evidence, the employer cannot be prosecuted for illegal employment of undocumented workers, which is otherwise a crime. This means that employers can go ahead and issue copies of records without fear of being prosecuted. The only thing to remember is that in case an employee made a false claim to citizenship on Form I-9, the immigration petition to adjust to RPI status will be denied if the petitioner was over the age of 18 at the time of signing the form. In other words, you should expect that the USCIS will be issuing a lot of subpoenas to employers directing them to submit I-9 records.