On Thursday, the Senate Foreign Relations Committee is scheduled to vote on President Bush's nomination of John Bolton to be ambassador to the United Nations. But that is now in doubt, as Sen. Joseph Biden, the panel's ranking Democrat, warns that Democrats might seek another delay in voting on this nomination that was originally scheduled for a vote three weeks ago. The pretext for the Biden complaint is that the State Department hasn't provided evidence of how Mr. Bolton used intelligence information in his speeches. Although Sen. John Kerry, another member of the Foreign Relations Committtee's anti-Bolton bloc, could not...