A defiant Supreme Court Justice Antonin Scalia refused Thursday to remove himself from a case involving his good friend, Vice President Dick Cheney, dismissing suggestions of a conflict of interest. In an unusual 21-page memorandum, he rejected a request by the Sierra Club. The environmental group said it was improper for Scalia to take a hunting trip with Cheney while the court was considering whether the White House must release information about private meetings of Cheney's energy task force. Scalia said the remote Louisiana hunting camp used for a duck hunting and fishing trip "was not an intimate setting." [...] For the first time, Scalia revealed details of his trip with Cheney. Scalia said he was the go-between to invite Cheney to hunt with a Scalia friend, Wallace Carline, who owns an oil rig services firm, Scalia wrote. Scalia and Cheney are friends from their days working in the Ford administration, Scalia noted. "I conveyed the invitation, with my own warm recommendation, in the spring of 2003 and received an acceptance," Scalia wrote. When the time came for the trip, Scalia and Cheney flew together, accompanied by one of Scalia's sons and a son-in-law, Scalia wrote.