sentences:  Hearings provide a forum where facts and opinions can be presented from witnesses with varied backgrounds, including Members of Congress and other government officials, interest groups, and academics, as well as citizens likely to be directly or indirectly affected by the proposal.Oversight hearings review or study a law, issue, or an activity, often focusing on the quality of federal programs and the performance of government officials.Hearings also ensure that the executive branch's execution goes with legislative intent, while administrative policies reflect the public interest.