(a)
In general— Subject to subsection (b), if a State or political subdivision of the State offers, the Secretary shall enter into an agreement with the State or political subdivision of the State under which the United States may accept funds from the State or political subdivision of the State to reopen, in whole or in part, any covered unit within the State or political subdivision of the State during any period in which there is a lapse in appropriations for the covered unit.
(b)
Applicability— The authority under subsection (a) shall only be in effect during any period in which the Secretary is unable to operate and manage covered units at normal levels, as determined in accordance with the terms of agreement entered into under subsection (a).
(c)
Refund— The Secretary shall refund to the State or political subdivision of the State all amounts provided to the United States under an agreement entered into under subsection (a)—
(1)
on the date of enactment of an Act retroactively appropriating amounts sufficient to maintain normal operating levels at the covered unit reopened under an agreement entered into under subsection (a); or
(2)
on the date on which the State or political subdivision establishes, in accordance with the terms of the agreement, that, during the period in which the agreement was in effect, fees for entrance to, or use of, the covered units were collected by the Secretary.
(d)
Voluntary reimbursement— If the requirements for a refund under subsection (c) are not met, the Secretary may, subject to the availability of appropriations, reimburse the State and political subdivision of the State for any amounts provided to the United States by the State or political subdivision under an agreement entered into under subsection (a).