Combating Methamphetamine Act of 2004

Combating Methamphetamine Act of 2004 - Amends the Omnibus Crime Control and Safe Streets Act of 1968 to authorize the Attorney General, through the Bureau of Justice Assistance (BJA), to make grants to States to address the manufacture, sale, and use of methamphetamine (methamphetamine use) to enhance public safety. Lists eligible programs, projects, and activities, including: (1) arresting individuals violating methamphetamine laws; (2) undertaking clandestine methamphetamine lab seizures and environmental cleanup; (3) providing community-based education, awareness, and prevention; and (4) providing Drug Court and Family Drug Court services to address methamphetamine use. Sets forth grant application requirements.

Authorizes the Attorney General, through BJA, to make grants to States, Indian tribal governments, and multijurisdictional or regional consortia thereof to develop a comprehensive, cooperative strategy to address methamphetamine use to enhance public safety. Earmarks specified sums (according to a specified formula) to each State.

Authorizes the Attorney General to: (1) collect systematic data on the effectiveness of the programs assisted under this Act in reducing methamphetamine use; (2) establish a national clearinghouse of information on effective programs to address such use that shall disseminate to State and local agencies a description of the results of research on reduction efforts and information on effective programs, best practices, and Federal resources; (3) establish a program within the Department of Justice to facilitate the sharing of knowledge in best practices among States addressing such use; and (4) provide technical assistance to State and local agencies implementing effective programs to reduce methamphetamine use.