Unexpended balances of funds made available under authority of the Mutual Security Act of 1954, as amended, and of the Foreign Assistance Act of 1961, as amended, [
22 U.S.C.
2151 et seq.], and allocated or transferred for the purposes of sections 405(a), 405(c), 405(d) and 451(c) of the Mutual Security Act of 1954, as amended [
22 U.S.C.
1925
(a), (c), (d),
1951
(c)], are authorized to be continued available for the purposes of this section and may be consolidated with appropriations authorized by this section.