; (2) whether the level of Federal funding available for the treatment of heroin, opioids, cocaine, methamphetamine, 3,4-methylene­dioxy­meth­am­phet­amine, and phen­cy­cli­dine abuse meets, exceeds, or is less than the amount necessary to provide adequate treatment for such abuse; and (3) the impact of effective treatment of heroin, opioids, cocaine, methamphetamine, 3,4-methylene­dioxy­meth­am­phet­amine, and phen­cy­cli­dine abuse on cost savings due to the reduced need for criminal justice and other services. (b) Reports (1) Interim report Not later than the last day of the two-year period beginning on the date of enactment of this Act, the Comptroller General shall submit to Congress a report on the interim findings of the study under subsection (a) . (2) Final report Not later than 3 years after the date on which the report under paragraph (1) is submitted to Congress, the Comptroller General shall submit to Congress a report on the findings of the study under subsection (a) . 8. No additional appropriations This Act, and the amendments made by this Act, shall not be construed to increase the amount of appropriations that are authorized to be approved for any fiscal year.