Modifies Senate Rule 84 to require at least two-thirds of the members of the Senate to vote in favor of a motion for the previous question

This bill amends Senate Rule 84 to require a two-thirds vote (instead of a simple majority) to approve a "motion for the previous question" - a procedure to end debate and force a final vote on a bill. It directly affects all senators during Senate floor proceedings when they vote on ending debate. The key change raises the threshold for moving to a vote on legislation, making it harder to bypass extended discussion. This is a procedural rule change impacting Senate voting mechanics, not a policy affecting citizens or programs.