before the date of the enactment of this Act and any existing officer vacancies within the Department of Homeland Security on such date of enactment, and subject to the availability of appropriations, the Director of U.S. Citizenship and Immigration Services shall increase by not fewer than 100 the number of trained full-time active duty Fraud Detection and National Security (FDNS) officers. (2) ICE homeland security investigations forensic document laboratory personnel By not later than September 30, 2021, in addition to positions authorized before the date of the enactment of this Act and any existing officer vacancies within the Department of Homeland Security on such date of enactment, the Director of U.S. Immigration and Customs Enforcement shall increase— (A) the number of trained, full-time Forensic Document Laboratory Examiners by 15