I believe the WH has already stated they knew he was writing under a pseudonym and he obtained the pass using his true name.
Thanks. That seemed like the most likely answer. Most libs use that point as evidence of a vast Rovian plot--a plot so all-encompassing, so diabolical, it appears in the short term to be utterly pointless. Yes, the mighty Rove will use a conservative reporter to some little-known website to brainwash the world!
Did you ever watch Freakazoid? The libs' Gannongate theory reminds me of that episode in which that Evil Professor designed a fog machine, and used it to transform the residents of an isolated Swiss hamlet into clowns who could only talk by honking their noses. Brilliant and yet...dumb.