The McCain campaign has released documents purporting to show that Sarah Palin fired Alaska’s much-admired public safety commissioner because he was "insubordinate" over budget issues. Palin is accused of firing Walt Monegan because he didn’t yield to pressure by the governor and her husband to dismiss Palin’s ex brother-in-law, a state trooper involved in a bitter divorce from Palin’s sister.

Specifically, and this is the kicker, the Anchorage Daily News is reporting that the McCain campaign has turned over documents to investigators in an attempt to show that: "’The last straw’ leading up to Monegan’s firing, Van Flein wrote, was Monegan’s planned trip to Washington, D.C., to seek funding for a new, multimillion-dollar sexual assault initiative the governor hadn’t yet approved."

The possibility that Palin clashed with the public safety commissioner over sexual assault prevention funding is intriguing. We already know that while Palin was mayor of Wasilla, her administration rewrote the budget to charge rape victims for the processing of their own rape kits. Palin’s police chief defended the policy, saying that the expense was a burden on the taxpayers of Wasilla.

Who was Monegan meeting with? Why did Palin, who never seems to have encountered a D.C. dollar she didn’t crave, object to Monega’s trip to Washington? Campaign Silo is investigating these questions and will keep you apprised.