For construction in space controlled, occupied or utilized by the United States Marshals Service for prisoner holding and related support, $25,000,000, to remain available until expended. Federal Prisoner Detention For necessary expenses related to United States prisoners in the custody of the United States Marshals Service as authorized by section 4013 of title 18, United States Code, $1,568,793,000, to remain available until expended: Provided , That not to exceed $20,000,000 shall be considered funds appropriated for State and local law enforcement assistance pursuant to section 4013(b) of title 18, United States Code: Provided further , That the United States Marshals Service shall be responsible for managing the Justice Prisoner and Alien Transportation System. National security division Salaries and expenses (including transfer of funds) For expenses necessary to carry out the activities of the National Security Division, $101,369,000, of which not to exceed $5,000,000 for information technology systems shall remain available until expended: Provided , That notwithstanding section 205 of this Act, upon a determination by the Attorney General that emergent circumstances require additional funding for the activities of the National Security Division, the Attorney General may transfer such amounts to this heading from available appropriations for the current fiscal year for the Department of Justice, as may be necessary to respond to such circumstances: Provided further , That any transfer pursuant to the preceding proviso shall be treated as a reprogramming under section 505 of this Act and shall not be available for obligation or expenditure except in compliance with the procedures set forth in that section. Interagency law enforcement Interagency crime and drug enforcement For necessary expenses for the identification, investigation, and prosecution of individuals associated with the most significant drug trafficking organizations, transnational organized crime, and money laundering organizations not