It is merely a theory that explains how free enterprise works. Banks for example, a very important part of the economy, are left out. Some socities do not accept the circular flow model theory. These socities, therefore, choose another economic system other than capitalism. Socialists and communists see the role of the government in a different light than capitalists do.
The United States Constitution states that the Vice President of the United States is the President of the Senate, despite not being a senator, and that the Senate must choose a president pro tempore.
Party leaders of the United States Senate. The Senate Majority and Minority Leaders are two United States Senators who are elected by the party caucuses that hold the majority and the minority. These leaders have the most time serving in the senate from both major parties. The current leaders are Republican Majority Leader Mitch McConnell of Kentucky and Democratic Minority Leader Chuck Schumer of New York. The current Assistant Majority Leader is Republican John Cornyn of Texas.