The Senate filibuster has had a banner year so far. In late January, the Senate approved modest changes to the filibuster. Senate Republicans used a silent filibuster of Chuck Hagel's nomination as defense secretary. And now, Rand Paul has gone old school with a Jimmy Stewart filibuster.
Here's an overview from Constitution Daily on how the filibuster started--and what it means today:
Senate deal puts the Jimmy Stewart filibuster on ice
Fascinating facts about Senate filibusters
Constitution Check: Will the courts strike down the Senate filibuster?
A short history of judicial filibusters: Partisanship run amok
The last time filibusters threatened a constitutional meltdown
10 things you should know about filibusters