Nothing in this subchapter shall be construed as a limitation on the powers of the Bank under subchapter I of this chapter; and except as to the standard of reasonable assurance of repayment required under section 635 (b)(1) of this title, all loans, guarantees, and insurance extended hereunder shall be subject to the provisions of subchapter I of this chapter, to the policies of the Bank with respect to terms of repayment, interest rates, fees, and premiums applicable to loans, guarantees, and insurance extended under subchapter I of this chapter.