Unanimous Consent

A request for unanimous consent asks the chamber to waive its rules or set terms for business, and it succeeds if no member present objects. Both chambers use it constantly for routine matters such as setting the schedule, dispensing with the reading of documents, or passing noncontroversial measures. The Senate began using formal unanimous consent agreements to set times for votes in the nineteenth century, and in 1914 it made such agreements binding once entered, so they now function as rules for the business they cover.

In the Senate, most bills and nominations reach a vote through unanimous consent agreements negotiated by the majority and minority leaders, often called time agreements, which specify when a measure will be considered, how long debate will last, which amendments will be offered, and when votes will occur. Because a single objection can block a request, every senator effectively holds a veto over quick action, and senators who intend to object can place a hold, notifying their party leader that they will not consent. Overcoming an objection usually requires the slower process of cloture, which consumes days of floor time.

Unanimous consent makes the Senate work despite its lack of debate limits, but its reliance on cooperation means that a determined senator or minority can slow business to a crawl. In 2025 the minority party refused consent for quick confirmation of almost all of the President's nominees, forcing roll call votes and cloture on each, and the majority responded in September 2025 by changing the rules to allow groups of nominees to be confirmed together. Supporters of the tradition say it protects every senator's right to be heard, while critics say it lets individual senators hold the chamber hostage.