Democratic Senators Patrick Leahy and Joseph Lieberman have written to Supreme Court Chief Justice William Rehnquist to question the appropriateness of Justice Antonin Scalia spending several days recently with Vice President Dick Cheney duck hunting. Their trip comes at a time that the court is deciding whether to force Cheney to open up records from his energy task force. The Senators asked Rehnquist to send them information on the court’s rules about justices recusing themselves from cases where “their impartiality might reasonably be questioned.”