; (2) the State (or such other grantee) shall be reimbursed for expenses that would have been paid by the Federal Government during such period had appropriations been available, including the cost of compensating such furloughed employees, together with interest thereon calculated under section 6503(d) of title 31, United States Code; and (3) the State (or such other grantee) may use funds available to the State (or the grantee) under such Federal program to reimburse such State (or the grantee), together with interest thereon calculated under section 6503(d) of title 31, United States Code. (b) For purposes of this section, the term State and the term grantee , including United States territories and possessions, shall have the meaning given such terms under the applicable Federal program under subsection (a). In addition, to continue carrying out a Federal program means the continued performance by a State or other Federal grantee, during the period of a lapse in appropriations, of a Federal program that the State or such other grantee had been carrying out prior to the period of the lapse in appropriations. (c) The authority under this section applies with respect to the period of a lapse in appropriations beginning on or about December 22, 2018, and ending on the date of enactment of this joint resolution with respect to the Department of Homeland Security which, but for such lapse in appropriations, would have paid, or made reimbursement relating to, any of the expenses referred to in this section with respect to the program involved. Payments and reimbursements under this authority shall be made only to the extent and in amounts provided in advance in appropriations Acts.