1. Capitalization, method of capital stock payments, issuance of Green Bonds Chapter 31 of title 31, United States Code, is amended by adding after section 3102 the following new section: 3102A. Green Bonds (a) Initial capitalization The Secretary of the Treasury shall issue bonds (in this section referred to as Green Bonds ) in the amount of $10,000,000,000 on the credit of the United States to acquire capital stock of the United States Green Bank (established under section 9801 of this title). Stock certificates evidencing ownership in the United States Green Bank shall be issued by the Green Bank to the Secretary of the Treasury, to the extent of payments made for the capital stock of the Green Bank. (b) Future capitalization Upon the request of the United States Green Bank, the Secretary of the Treasury shall issue additional Green Bonds on the credit of the United States to acquire additional capital stock of the United States Green Bank in an aggregate amount not to exceed $50,000,000,000 outstanding at any one time. (c) Denominations and maturity Green Bonds shall be in such forms and denominations, and shall mature within such periods, as determined by the Secretary of the Treasury. (d) Interest Green Bonds shall bear interest at a rate not less than the current average yield on outstanding market obligations of the United States of comparable maturity during the month preceding the issuance of the obligation as determined by the Secretary of the Treasury. (e) Guaranteed Green Bonds shall be fully and unconditionally guaranteed both as to interest and principal by the United States, and such guaranty shall be expressed on the face of each bond. (f) Lawful investments Green Bonds shall be lawful investments, and may be accepted as security for all fiduciary, trust, and public funds, the investment or deposit of which shall be under the authority or control of the United States or any officer or officers thereof. . 2. Green Bank Title 31, United States Code, is amended by adding the following new chapter