. . . .
(b) A person may be a debtor under chapter 7 of this title only if such person is not --
(2) a domestic insurance company, bank, savings bank, cooperative bank, savings and loan association, building and loan association, homestead association, credit union, or industrial bank or similar institution whish is an insured bank as defined in section 3(h) of the Federal Deposit Insurance Act (12 U.S.C. 1813(h)); or
(3) a foreign insurance company, bank, savings bank, cooperative bank, savings and loan association, building and loan association, homestead association, or credit union, engaged in such business in the United States.