Final answer:
In the US Senate, unlimited debate can be ended by a cloture motion, which requires the agreement of 60 senators to proceed to a vote on the legislation, effectively overriding a filibuster.
Step-by-step explanation:
The question pertains to the practices used in legislative bodies, such as the United States Senate, for managing debate on proposed legislation. In the context of the US Senate, can a member end debate with a secondary motion? The answer is that under normal circumstances, debate is expected to continue until no member wishes to be recognized to speak further. However, a specific procedural motion, known as a cloture motion, is necessary to end debate when a member or members are actively engaging in a filibuster which aims to prevent a vote through prolonged debate.
In general, debate in the Senate allows for unlimited discussion and the amendments do not have to be germane to the subject of the bill. The debate only concludes when there are no more senators seeking recognition to speak. But, in cases of a filibuster, 60 senators must agree on a cloture motion to end the debate and proceed to a vote on the legislation.