; and (B) the Director for Domestic Nuclear Detection shall be deemed to be a reference to the Assistant Secretary for the Countering Weapons of Mass Destruction Office. (2) Construction Sections 1923 through 1927 of the Homeland Security Act of 2002, as redesignated by subsection (a), shall be construed to cover the chemical and biological responsibilities of the Assistant Secretary for the Countering Weapons of Mass Destruction Office. (3) Authority The authority of the Director of the Domestic Nuclear Detection Office to make grants or enter into cooperative agreements is transferred to the Assistant Secretary for the Countering Weapons of Mass Destruction Office, and such authority shall be construed to include grants for all purposes of title XIX of the Homeland Security Act of 2002, as amended by this Act. (c) Chief Medical Officer (1) Repeal Title V of the Homeland Security Act of 2002 ( 6 U.S.C. 311 et seq.) is amended by striking section 516. (2) Amendment Title XIX of the Homeland Security Act of 2002 ( 6 U.S.C. 591 et seq.), as amended by subsection (a), is further amended by adding at the end the following: C Chief Medical Officer 1931. Chief Medical Officer (a) In general There is in the Office a Chief Medical Officer, who shall be appointed by the President. The Chief Medical Officer shall report to the Assistant Secretary. (b) Qualifications The individual appointed as Chief Medical Officer shall be a licensed physician possessing a demonstrated ability in and knowledge of medicine and public health. (c) Responsibilities The Chief Medical Officer shall have the responsibility within the Department for medical issues related to natural disasters, acts of terrorism, and other man-made disasters, including— (1) serving as the principal advisor on medical and public health issues to the Secretary, the Administrator of the Federal Emergency Management Agency, the Assistant Secretary, and other Department officials; (2) providing operational medical support to all components of the Department