(a) Trust fund There are authorized to be appropriated out of the Harbor Maintenance Trust Fund, established by section
9505 of title
26, for each fiscal year such sums as may be necessary to pay
(1) 100 percent of the eligible operations and maintenance costs of those portions of the Saint Lawrence Seaway operated and maintained by the Saint Lawrence Seaway Development Corporation for such fiscal year; and
(2) up to 100 percent of the eligible operations and maintenance costs assigned to commercial navigation of all harbors and inland harbors within the United States.
