The term 'Filibuster Busters' refers to a group of senators who support the use of cloture, which is a parliamentary procedure used to end a debate and bring a vote on a proposed piece of legislation. Cloture requires a three-fifths majority vote in the Senate and is often used to prevent filibusters, which are attempts to delay or block a vote on a bill. The Filibuster Busters are a group of senators who support the use of cloture to end filibusters and bring a vote on a proposed bill.