The Secretary of Agriculture and the Secretary of Energy shall, not later than 90 days after July 12, 1985, submit to the Congress a report on the status of Federal programs relating to the barter or exchange of commodities owned by the Commodity Credit Corporation for materials and products produced in foreign countries. Such report shall include details of any changes necessary in existing law to allow the Department of Agriculture and, in the case of petroleum resources, the Department of Energy, to implement fully any barter program.