None of the funds authorized to be appropriated by the Department of Energy National Security and Military Applications of Nuclear Energy Authorization Act of 1981 (; ) or any other Act may be used to pay any penalty, fine, forfeiture, or settlement resulting from a failure to comply with the Clean Air Act ( et seq.) with respect to any defense activity of the Department of Energy if—
((1)) the Secretary finds that compliance is physically impossible within the time prescribed for compliance; or
((2)) the President has specifically requested appropriations for compliance and Congress has failed to appropriate funds for such purpose.