Final answer:
A subsidiary motion to limit or extend limits of debate can result in an immediate closing of debate if adopted in such a way. However, such actions are bound by the rules and agreements of the deliberative body, such as the U.S. Senate, where a supermajority vote can end extended debate via cloture.
Step-by-step explanation:
The subsidiary motion to limit or extend limits of debate is a procedural technique used in various deliberative bodies, including the United States Senate. In situations allowing unlimited debate, amendments do not have to be germane, and discussion only concludes when no one else seeks recognition. If such a motion is adopted it could indeed require an immediate closing of debate, depending on the specific terms of the motion. The Senate often utilizes such mechanisms to manage the length and extent of debate on legislative matters. It's also important to note that in the Senate, a procedural action called cloture can be employed to end a filibuster--a tactic used by senators to extend debate on a bill indefinitely--by securing a supermajority vote.
However, the use of such subsidiary motions must adhere to rules and traditions, such as senators allowing each other to speak as long as wanted unless time limits are agreed upon. Senate Action, therefore, can be influenced by these procedural motions to either limit or extend debate, but the specifics would depend on the Senate's standing rules and the agreement of its members at that time.