美国财政部在国库现金管理方面的一项重要职责,是尽最大可能将暂时闲置的国库现金选择以商业银行活期储蓄特别是定期储蓄(以及债券回售)的形式持有。为确保国库现金万无一失乃至国库现金管理安全高效运行,美国联邦法律规定接受国库活期储蓄和定期储蓄的商业银行需要及时提交优质足额的金融资产作为抵押。 An important duty of the U.S. Treasury in treasury cash management is to try its best to hold the temporarily idle state treasury cash option in the form of current bank savings, particularly fixed-term savings (and bond repurchases). In order to ensure the treasury cash is safe and secure and the treasury cash management is safe and efficient, the commercial banks regulated by the federal law of the United States that accept the treasury’s current savings and time deposits need timely submission of high-quality and full-fledged financial assets as collateral.