On Monday the Department of Justice filed a Petition for Writ of Certiorari with the Supreme Court in Department of the Interior v. Kerr-McGee Oil and Gas Corp., seeking to challenge a Fifth Circuit ruling earlier this year that held that the Deepwater Royalty Relief Act of 1995 did not authorize price thresholds in deepwater oil and gas leases issued between 1996 and 2000. Respondents have until August 12 to reply. View the Supreme Court docket here.