filibuster
n 1: a legislator who gives long speeches in an effort to delay or obstruct legislation that he (or she) opposes syn: filibusterer 2: a tactic for delaying or obstructing legislation by making long speeches v : obstruct deliberately by delaying; of legislation
In the Senate the Minority party use of the filibuster can stop everything and controversial because of there opposition to it.
filibuster by Dictionary Server April 14, 2004