Answer:
Neither house of Congress is allowed to amend conference reports because, conference reports are privileged. In the Senate, a motion to proceed to a conference report is not debatable, although Senators can generally filibuster the conference report itself. The Congressional Budget Act of 1974 limits debate on conference reports on budget resolutions and budget reconciliation bills to ten hours in the Senate, so Senators cannot filibuster those conference reports.
Step-by-step explanation:
Most times, the conference committee produces a conference report melding the work of the House and Senate into a final version of the bill. A conference report proposes legislative language as an amendment to the bill committed to conference. The conference report also includes a joint explanatory statement of the conference committee. This statement provides one of the best sources of legislative history on the bill.