At Politico's The Arena, Northeastern professor Alan Schroeder asks a good question that I haven't seen posed anywhere else:

Colin Powell's endorsement knocks the legs out from under the "pals around with terrorists" argument. But if Powell is willing to endorse Obama, shouldn't he also be willing to campaign with him?

Thoughts, readers?

Over at Media Nation, Dan Kennedy asks of Colin Powell's endorsement of Barack Obama: "Is this as big as everyone thinks it is?"

We shall see. But here's my prediction: thanks to the memory of Powell's fatally flawed, pre-Iraq War speech to the U.N, his endorsement won't be quite as valuable as it otherwise would. After all (conservatives can argue), Powell was wrong on Iraq--so what if he's wrong on Obama, too?