this requirement. 624. None of the funds appropriated by this Act may be used by the Federal Communications Commission to modify, amend, or change the rules or regulations of the Commission for universal service high-cost support for competitive eligible telecommunications carriers in a way that is inconsistent with paragraph (e)(5) or (e)(6) of section 54.307 of title 47, Code of Federal Regulations, as in effect on July 15, 2015: Provided, That this section shall not prohibit the Commission from considering, developing, or adopting other support mechanisms as an alternative to Mobility Fund Phase II: Provided further, That any such alternative mechanism shall maintain existing high-cost support to competitive eligible telecommunications carriers until support under such mechanism commences. 625. (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, adjudication activities, or other law enforcement- or victim assistance-related activity. 626. None of the funds appropriated or other-wise made available by this Act may be used to pay award or incentive fees for contractors whose performance has been judged to be below satisfactory, behind schedule, over budget, or has failed to meet the basic requirements of a contract, unless the Agency determines that any such deviations are due to unforeseeable events, government-driven scope changes, or are not significant within the overall scope of the project and/or program and unless such awards or incentive fees are consistent with section 16.401(e)(2) of the Federal Acquisition Regulation. 627. (a) None of the funds made available under this Act may be used to pay for travel and conference activities that result in a total cost to an