Time for another Congressional investigation.
It is open knowledge who the leak was from. The person knew the reporter due to a prior incident. They just can’t get either one to admit it and have no physical evidence.
All the staff should be offered jobs with the Department of Agriculture on a west Texas feed lot inspection station and a new staff brought in. The guilty party should cost the entire staff their jobs and the SC should be set up with a fresh set of new hires knowing that is the price. Let them all keep each other in line.