House Natural Resources Committee Democrats want the Interior Department to turn over information about potential wrongdoing by U.S. oil companies.
A letter Tuesday to Interior Secretary Deb Haaland, obtained by POLITICO, stems from price fixing litigation against Pioneer Natural Resources and other firms.
The Federal Trade Commission has accused former Pioneer CEO Scott Sheffield of colluding with OPEC competitors and barred him from joining the board of Exxon Mobil, which bought Pioneer. Sheffield has denied the claims.
Congressional Democrats, who have for years accused the oil and gas industry of working to keep energy prices high, have launched various probes.