What two-word term is used to describe a controversial rule change in the u. s. senate that allows a majority party to overcome a filibuster with a simple majority vote?

The nuclear option was the term used to describe the decision of the United States senate to override the majority party in overcoming a filibuster. In addition, it was the parliamentary procedure that is done to approve a majority via voting. The term "nuclear option" was used since it was described as a most extreme option in warfare.