the head of any Federal department, agency, or corporation may, notwithstanding any other provision of law, extend to American Samoa, without reimbursement, such scientific, technical, and other assistance under any program which it administers as, in the judgment of the Secretary of the Interior, will promote the welfare of American Samoa. The provisions of the preceding sentence shall not apply to financial assistance under any grant-in-aid program. The Secretary of the Interior shall not request assistance pursuant to this subsection which will involve nonreimbursable costs as estimated for him in advance by the heads of the departments, agencies, and corporations concerned in excess of an aggregate of $150,000 in any one fiscal year;

the Secretary of Agriculture may extend to American Samoa the benefits of the Richard B. Russell National School Lunch Act, as amended [42 U.S.C. 1751 et seq.]; and

the Secretary of Health, Education, and Welfare may extend to American Samoa the benefits of the Vocational Education Act of 1946, the Hospital Survey and Construction Act [42 U.S.C. 291 et seq.], and section 246 of title 42, all as amended.