of title 28, United States Code. 416. (a) All unobligated balances, including recaptures and carryover, remaining from funds appropriated in division K of Public Law 115–31 for Department of Transportation-Office of the Secretary-Salaries and Expenses , Department of Transportation-Office of the Secretary-Office of Civil Rights , Department of Transportation-Office of the Secretary-Small and Disadvantaged Business Utilization and Outreach , Department of Transportation-Federal Transit Administration-Administrative Expenses , Department of Transportation-Pipeline and Hazardous Materials Safety Administration-Operational Expenses , Surface Transportation Board-Salaries and Expenses , Access Board-Salaries and Expenses , Federal Maritime Commission-Salaries and Expenses , National Railroad Passenger Corporation-Office of Inspector General-Salaries and Expenses , National Transportation Safety Board-Salaries and Expenses , and United States Interagency Council on Homelessness-Operating Expenses are rescinded. (b) All unobligated balances, including recaptures and carryover, remaining from funds appropriated in division K of Public Law 115–31 for accounts under the headings Department of Housing and Urban Development-Management and Administration and Department of Housing and Urban Development-Program Office Salaries and Expenses are rescinded. 417. (a) None of the funds made available in this Act may be used to maintain or establish a computer network unless such network blocks the viewing, downloading, and exchanging of pornography. (b) Nothing in subsection (a) shall limit the use of funds necessary for any Federal, State, tribal, or local law enforcement agency or any other entity carrying out criminal investigations, prosecution, or adjudication activities. spending reduction account 418. $0. This Act may be cited as the Transportation, Housing and Urban Development, and Related Agencies Appropriations Act, 2018 .