The Secretary shall establish under this subchapter a Medicaid Improvement Fund (in this section referred to as the “Fund”) which shall be available to the Secretary to improve the management of the Medicaid program by the Centers for Medicare & Medicaid Services, including oversight of contracts and contractors and evaluation of demonstration projects, and, in accordance with subsection (b)(3), for the purposes of subparagraph (B) of such subsection. Payments made for activities under this subsection shall be in addition to payments that would otherwise be made for such activities.