Nicholas Kristof: If Mr. Cheney can't address the questions about his conduct, if he can't be forthcoming about the activities in his office that gave rise to the investigation, then he should resign. And if he won't resign, Mr. Bush should demand his resignation.
It's not that there's a lick of evidence that Mr. Cheney is a criminal. There isn't. But the standard of the office should be higher than that: the White House should symbolize integrity, not legalistic refusals to discuss criminal cover-ups.
