In response to Republican efforts to slow down consideration of legislation concerning China with filibusters on amendments, Senate Majority Leader Reid moved to limit the use of the filibuster: 
The Senate descended into procedural chaos Thursday night as 
Democrats forced a change in Senate rules and shut down a GOP effort to 
bog down a Chinese currency bill with a series of unrelated amendments.
Senate Majority Leader Harry Reid’s
 move to suddenly overhaul a key Senate rule without warning infuriated 
Republicans and put an already bitterly divided chamber on edge as 
senators from both sides of the aisle traded angry accusations over 
whether the fight would fundamentally limit the rights of the minority 
party.
By a 51-48 vote, the Senate voted along party lines to change the 
precedent and limit how amendments can be considered once a filibuster 
is defeated. Under normal procedure, the Senate has 30 hours of debate 
after 60 senators agree to end a filibuster. Amendments can be 
considered during those 30 hours if each side agrees by unanimous 
consent to schedule a vote — or if a senator moves to waive the rules, 
which would then require the support of 67 senators in order to succeed. 
But under the new procedure, senators can no longer move to waive the 
rules once a filibuster is defeated — a battle that threatens to further
 inflame partisan tensions and stymie legislative action at a time when 
frustration with Congress is at an all-time high.