; and (2) such sums as are necessary for each fiscal year thereafter. (b) Acquisition of museum site There are authorized to be appropriated such sums as are necessary to carry out section 5. (c) Availability Amounts made available under subsections (a) and (b) shall remain available, without fiscal year limitation, until expended. (d) Use of funds for fund-Raising Amounts made available under this section may be used to raise funds from private sources to support and promote the Museum.