House vs. Senate Rules

Article I lets each chamber determine the rules of its proceedings, and the two have taken opposite paths. The House, with 435 members, adopts its rules by majority vote at the start of every Congress, and those rules concentrate power in the majority: the Speaker and the Rules Committee decide which bills come to the floor, debate is strictly limited, and amendments are allowed only as the majority permits. A cohesive majority can pass legislation in the House without a single minority vote.

The Senate considers itself a continuing body, because two thirds of its members carry over from one Congress to the next, so its standing rules remain in force and changing them formally requires ending debate by a two-thirds vote. Its rules favor individual senators: debate is unlimited unless sixty senators invoke cloture, amendments generally need not be germane to the bill, and nearly all business is conducted by unanimous consent agreements that any one senator can block. A single senator can place a hold on a nomination or bill, effectively a private threat to object.

The practical result is that the House is a majoritarian institution and the Senate a supermajoritarian one. Bills that pass the House easily often stall in the Senate, and Senate leaders spend much of their time negotiating with individual members. The differences also explain why the Senate has repeatedly changed its practices by precedent rather than formal rule changes, as with the 2013 and 2017 nuclear options, and why procedures such as budget reconciliation, which limit debate by statute, have become so important.