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.
Asker's rating. Report Abuse. Robert Byrd is the President pro tempore of the United States Senate and that makes him the Head of the Senate, in a tie vote the Vice President would step in and break the tie.