Suicidal Democrats
Of Course! John Podheretz has figured out the answer! Here's a quote:

May 9, 2003 -- FOR all you conspiracy theorists out there, I've got a hot new one for you: Based on the available evidence offered over the past few days, it appears key Democrats on Capitol Hill are secretly in the employ of the president and his political adviser, Karl Rove.
What's more, these double agents are using some useful idiots in the media to advance their nefarious effort to discredit the Democratic Party and hand the 2004 election over to George W. Bush without a fight.

It's the only possible explanation. How else can you decipher the suicidal decision of several important Democrats to make a stink about Bush's speech on board USS Abraham Lincoln last week?