SEC. 740. [D.C. Official Code ' 1-207.40] (a) Notwithstanding any other provision oflaw, whenever the President of the United States determines that special conditions of anemergency nature exist which require the use of the Metropolitan Police force for Federalpurposes, he may direct the Mayor to provide him, and the Mayor shall provide,
such services ofthe Metropolitan Police force as the President may deem necessary and appropriate. In no case,however, shall such services made available pursuant to any such direction under this subsection extend for a period in excess of forty-eight hours unless the President has, prior to the expiration of such period, notified the Chairmen and ranking minority members of the Committees on the District of Columbia of the Senate and the House of Representatives, in writing, as to the reason for such direction and the period of time during which the need for such services is likely to continue
(b) Subject to the provisions of subsection (c) of this section, such services made available in accordance with subsection (a)
of this section shall terminate upon the end of such emergency, the expiration of a period of thirty days following the date on which such servicesare first made available, or the enactment into law of a joint resolution by the Congress providingfor such termination, whichever first occurs.