美国联邦行政部门“三公”消费管理之所以能够比较顺利地进行,不仅得益于美国在“三公”消费方面具有较强操作性的详细规定,而且相当程度上有赖于一些适合美国国情的制度保障“三公”消费支出在当代国家治理过程中普遍存在,美国也不例外。美国实行联邦制,联邦政府在“三公”消费方面的法规与制度基本上只适用于联邦政府,而各州和地方政府的“三公”消费主要受州和地方相关制度的约束和管理。即使在联邦政府内部,立法、行政和司法三权部门之间在“三公”消费的制度约束 The reason why the U.S. federal administration and the “three publics” administration of consumption are able to proceed smoothly is not only due to the detailed regulations of the United States that are more operational in the “three official” consumption aspects but also to a large extent due to the fact that some U.S.- System of national security “Three official ” Consumption expenditure is common in the process of governance in contemporary countries, the United States is no exception. The United States practiced federalism. The federal government’s laws and regulations on “three official” consumption basically apply only to the federal government. The “three official” consumption by the state and local governments is mainly governed by and constrained by the relevant state and local laws . Even within the federal government, the legislative, executive and judicial powers in the “three official” system of spending constraints