((a)) ** .—** There are authorized to be appropriated to carry out this subchapter $15,000,000 for each of fiscal years 2017 through 2030.

((b)) ** .—** Funds made available under subsection (a)—

((1)) may be advanced each fiscal year to the National Park Foundation in a lump sum without regard to when expenses are incurred;

((2)) shall be provided to the National Park Foundation for use to match contributions (whether in currency, services, or property) made to the Foundation;

((3)) may not be used by the National Park Foundation for administrative expenses of the Foundation, including for salaries, travel and transportation expenses, and other overhead expenses; and

((4)) may not be deposited by the National Park Foundation into any fund that will be invested or earn interest in any way.