The state tax commission is hereby directed and authorized to request for and on behalf of the State of Mississippi the payment by the United States of any sums in lieu of taxes as authorized and contemplated by Section 2, Public Law 845, 74th Congress, approved June 29, 1936, (Paragraph 432, Title 40, U. S. C. S). The state tax commission is further authorized and empowered to enter into negotiations and consummate an agreement, or any renewal or alteration thereof, for and on behalf of the State of Mississippi for payment by the United States of any sums in lieu of taxes, authorized by said law. The authority hereby vested in the state tax commission is continuous and may be exercised annually, or at such times as may be deemed necessary or expedient.