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filibuster, in legislative practice, the parliamentary tactic used in the U.S. Senate by a minority of the senators—sometimes even a single senator—to delay or prevent parliamentary action by talking so long that the majority either grants concessions or withdraws the bill. Unlike the U.S. House of Representatives, in which rules limit speaking time, the Senate allows unlimited debate on a bill. Speeches can be completely irrelevant to the issue. What do you think? Explore the...