The Senate majority leader has a traditional right to be recognized first for the purposes of offering amendments on legislation. The term itself is a colloquial name for the diagram used to show the priority given to amendments to a bill. The trunk of the tree represents the bill, while the branches reflect the corresponding
amendments. Majority leaders fill the tree to introduce first- and second-degree amendments that block other senators from offering further amendments because the Senate cannot move on to another amendment without unanimous consent or overcoming a filibuster on the motion to put the other amendment before the body. Depending on the particular
bill, one of four trees may be used: the first tree has room for three amendments, the second and third trees have room for five amendments, and the fourth tree has room for 11 (or 12 in rare instances) amendments. To fill the tree, none of the slots may be left available. ==Consequences==