; or (2) engaging in financial or investment banking activities, except with respect to the Bank’s own revenues. (e) Pledge and credit facilities (1) Pledge The Bank shall have the authority to pledge its loans to the discount window of the Board of Governors of the Federal Reserve System. (2) Purchase of obligations The Secretary of the Treasury may purchase obligations issued by the Bank in the same manner and under the same requirements that the Secretary purchases obligations under section 306(c) of the Federal Home Loan Mortgage Corporation Act ( 12 U.S.C. 1455(c) ). (f) Leverage limitation The Bank shall maintain risk-based capital at no less than 10 percent, collectively for the Bank and the Holding Company. (g) Lifecycle The Bank shall ensure that infrastructure projects account for long-term operations, maintenance, and life-cycle costs and obligations to ensure that the infrastructure projects maximize the useful life of each applicable asset. (h) Infrastructure delivery The Bank, as a clearinghouse for infrastructure finance, may provide implementation advisory assistance, directly or indirectly, to infrastructure projects. (i) Credit rating The Bank shall accept credit ratings consistent with typical infrastructure market practice to enhance deployment of capital. (j) Prohibition on funding of foreign projects The Bank is prohibited from providing equity investments, direct loans, indirect loans, and loan guarantees for infrastructure projects not located within the United States. (k) Prohibition with respect to China The Bank is prohibited from providing equity investments, direct loans, indirect loans, and loan guarantees for infrastructure projects that are owned, directed, controlled, financed, or influenced by the Government of the People’s Republic of China, the Chinese Communist Party, or the People’s Liberation Army. 6. Holding Company securities (a) Equity securities (1) In general The Holding Company shall issue such equity securities as the Board of Directors of the Holding Company