Export-Import Bank of the United States shall continue to exercise its functions in connection with and in furtherance of its objects and purposes until the close of business on December 31, 2026, but the provisions of this section shall not be construed as preventing the bank from acquiring obligations prior to such date which mature subsequent to such date or from assuming prior to such date liability as guarantor, endorser, or acceptor of obligations which mature subsequent to such date or from issuing, either prior or subsequent to such date, for purchase by the Secretary of the Treasury or any other purchasers, its notes, debentures, bonds, or other obligations which mature subsequent to such date or from continuing as a corporate agency of the United States and exercising any of its functions subsequent to such date for purposes of orderly liquidation, including the administration of its assets and the collection of any obligations held by the bank.