The White House is sidestepping questions about whether Vice President Cheney revealed a CIA officer's identity to an aide before it was leaked.
Press Secretary Scott McClellan says he won't have any comment on an "ongoing investigation."
The grand jury probing the leak ends its term this week and there's speculation Cheney's chief of staff, Scooter Libby, or President Bush's deputy chief of staff, Karl Rove, could be indicted.
A special prosecutor's spent the past two years probing who blew the cover on operative Valerie Plame, whose husband was a top administration critic on Iraq.
The New York Times reports that the prosecutor has notes showing Libby first heard of Plame from Cheney -- not from journalists as he told the grand jury.
Meantime, asked if Bush retains confidence in Cheney, McClellan tells reporters the vice president is doing a "great job."