Termination of unauthorized programs after third unauthorized year

(a) In general Any unauthorized program that causes a budgetary level reduction under section 3(b) applicable to the third fiscal year following the expiring fiscal year shall, effective immediately on October 1 of the fiscal year immediately following such third fiscal year, be terminated, except that any unobligated amounts available for such program after the date of termination shall remain available for recording, adjusting, and liquidating valid obligations of such program issued before such termination date. (b) Obligation of funds prohibited without reauthorization No funds may be obligated for any program terminated pursuant to subsection (a) in any fiscal year without an express reauthorization of the program by Congress containing an authorization of appropriations period not to exceed three years.