A filibuster is a political procedure in which one or more members of a legislative body prolong debate on proposed legislation so as to delay or entirely prevent a decision. It is sometimes referred to as "talking a bill to death" or "talking out a bill", and is characterized as a form of obstruction in a legislature or other decision-making body.
United States Senator Warren R. Austin speaking during an all-night filibuster
Obstructionism is the practice of deliberately delaying or preventing a process or change, especially in politics.
John O'Connor Power "the brains of Obstruction" Caricature by "Spy" (Leslie Ward) in Vanity Fair, 25 December 1886
U.S. Senate Minority Leader Mitch McConnell is considered a prominent obstructionist