for purposes other than those for which it was provided. (b) Exceptions and waiver (1) Exceptions Subsection (a) shall not apply to humanitarian assistance, disaster assistance, or assistance to combat corruption. (2) Waiver The Secretary of State or the Secretary of Defense, on a case by case basis, may waive the requirement under subsection (a) if the Secretary of State or the Secretary of Defense certifies to the appropriate congressional committees that such waiver is important to the national security interests of the United States.