have zealously guarded their prerogatives from the executive branch. When outgoing Senate Majority Leader Lyndon B. Johnson became Vice-President, the President of the Senate, he suggested that his duties should include presiding over the Senate Democratic Caucus. Senate Democratic Caucus members generated enough opposition, to what they perceived as executive branch intrusion, that Johnson dropped his idea. References Caucuses of the United States Congress Parliament of Canada Caucuses in the United States