How Unanimous Consent Agreements Regulate Senate Floor Action [Updated March 2, 2022] [open pdf - 957KB]
From the Document: "The Senate often regulates consideration of a measure or other matter by means of a unanimous consent agreement (also called a 'UC agreement' or 'consent agreement'). A consent agreement typically regulates one or more of the following: (1) initiating consideration, (2) amendments, (3) time for debate, (4) motions, (5) concluding consideration, and (6) subsequent proceedings. Formerly, the Senate often entered into such an agreement before taking up a matter, and it typically covered all phases of consideration and followed a standard model. Today's agreements more often address only selected aspects, and many are reached only after consideration begins. As a result, consideration of some matters is regulated by several successive partial consent agreements or modifications of an initial one."
CRS Report for Congress, RS20594
Congressional Research Service: https://crsreports.congress.gov/