Obstructing legislation is a term used to describe the process of using a FILIBUSTER to delay or prevent a vote on a bill. A FILIBUSTER is a tactic used by members of a legislative body to delay or prevent a vote on a bill by speaking for an extended period of time. This tactic can be used to prevent a vote on a bill, as it requires a supermajority to end the FILIBUSTER and move forward with the vote. Filibusters are often used to block legislation that is unpopular or controversial, and can be used to prevent the passage of laws that would otherwise pass.