The governing system of the United States,partly by design and partly by accident,embodies elements of both these concepts of representation.The presidency is a truly national office that inclines its incumbent to take a national view of issues,while Congress is both a national institution and a body that is subject to powerful constituency influence.U.S.Congress plays extremely important role in public policy-making in the U.S.In fact,it is the main body of government that makes public policies(legislation means立法，法就是 法案，法案就是关于公共政策的) U.S.separation of power system British parlimentary system French hybrid system Term limit debateThe governing system of the United States, partly by design and partly by accident, embodies elements of both these concepts of representation. The presidency is a truly national office that inclines its incumbent to take a national view of issues, while Congress is both a national institution and a body that is subject to powerful constituency influence. U.S. Congress plays extremely important role in public policy-making in the U.S. In fact, it is the main body of government that makes public policies (legislation means 立法，法就是 法案，法案就是关于公共政策的). n U.S. separation of power system n British parlimentary system n French hybrid system n Term limit debate