(b) The term financial assistance means any form of loan, grant, guaranty, insurance, payment, rebate, subsidy, or any other form of direct or indirect Federal assistance other than
(1) general revenue-sharing grants made under section
67021 of title
31;
(2) deposit or account insurance for customers of banks, savings and loan associations, credit unions, or similar institutions;
(3) the purchase of mortgages or loans by the Government National Mortgage Association, the Federal National Mortgage Association, or the Federal Home Loan Mortgage Corporation;
(4) assistance for environmental studies, plans, and assessments that are required incident to the issuance of permits or other authorizations under Federal law; and
(5) assistance pursuant to programs entirely unrelated to development, such as any Federal or federally assisted public assistance program or any Federal old-age, survivors, or disability insurance program. Such term also includes flood insurance described in sections 4029(a) and (b) of title 42 on and after the dates on which the provisions of those sections become effective.