A good case can be built that Saddam did NOT send his WMDs to Syria. Yes, the Russians had plenty to remove before the US and allies invaded and Syria was the closest place to hide records, booty, and whatever else they didn't want the Americans to find.
But Saddam most likely hid his chemical and biological weapons in several large bunkers in southern Iraq that the US knows about but has not yet opened because they would have to divert river and canal to do so. They are safely there out of harm's way. The Bush administration is more concerned with fighting the WOT and killing terrorists drawn to Iraq by the illusion of the US's weakness--an illusion brought about by the MSM and the Dems.
So it is helpful at this stage of the war to not reveal the presence of WMD so that the enemies keep up investing in their losing tactics. This stage is almost over, imho, and we must soon deal with Iran.
Who would it benefit more if we knew where the WMD's are and realease the info now?
Republicans?
Terrorist?
Where are most of the terrorist coming from?