Answer:
the Senate Rules
Explanation:
When it comes to using the "Filibuster" (political procedure that delays a decision in the proposal), the Senate has the power to temporarily stop the passage of a bill. This demonstrates the importance of the "Senate Rules" or the "Standing Rules of the Senate."
Under such rule, the Senate has the right to use the obstructionary tactic (Filibuster). It also has the right to end it through "Cloture" (used to bring a quick end to a debate). This behavior is often linked to "political stonewalling" (refusing to cooperate). Thus, it often results to a lengthy discussion.