Bolton Nomination Stalled

CNN reports:

WASHINGTON (CNN) – After hours of heated exchanges, the Senate failed Thursday evening to close off debate on President Bush’s nomination of John R. Bolton to be ambassador to the United Nations … Two key Democratic senators – Christopher Dodd of Connecticut and Joe Biden of Delaware – asked their Democratic colleagues Thursday to vote against closing the debate. The two said they wanted more time for the Bush administration to turn over requested documents relating to Syria and to 10 instances of communications intercepted by the National Security Agency. The senators said Bolton had once sought those intercepts as the undersecretary of state for arms control.

If the White House wants a vote on the Bolton nomination, why not comply with this request? What is the White House hiding?