It's funny that conservatives only started complaining about partisanship when the 9/11 commission started producing testimony damaging to George Bush, isn't it? But where were they when he resisted setting up any kind of commission in the first place? Or when he then tried to make a joke out of it by appointing Henry Kissinger as its head? Or on the repeated occasions when he stonewalled the commission when it requested needed documentation and testimony?

Histrionics are not the only sign of partisanship. On the contrary: although preventing an investigation because it might damage you politically is more subtle, it's every bit as partisan. What's more, it's probably more dangerous in the long run, especially when it comes from a commander-in-chief whose party controls every branch of government.