American Anti-Torture Act of 2009 - Amends the Detainee Treatment Act of 2005 to prohibit any person in the custody or control of the United States (under current law, the Department of Defense) from being subject to any treatment or technique of interrogation not authorized by and listed in the U.S. Army Field Manual on Human Intelligence Collector Operations.
Makes such prohibition inapplicable with respect to any person in the custody or control of the United States (under current law, the Department of Defense) pursuant to a U.S. criminal or immigration law.