Final answer:
The continuity of a member's reporting record in the United States Congress is maintained by the individual chambers, as required by the Constitution. This is detailed in the daily published Congressional Record, which documents all official activities.
Step-by-step explanation:
The responsibility for ensuring the continuity of a member's reporting record falls on the individual chambers of Congress, as per Section 5 Clause 3 of the United States Constitution. This clause mandates that both chambers of Congress keep and publish an official record of their sessions, known as the Congressional Record. It is a daily publication that documents all official activities when either house is in session, adhering to a reporting structure that answers who, what, when, where, why, and how questions. Furthermore, a person holding any Office under the United States is prohibited from being a Member of either House during their tenure, to ensure separation of powers and reduce conflicts of interest.