That's true, but they are political appointees and most have been have pursued the path of running for DA or attorney-general in state and local elections. Sorry for the confusion, I suppose I should have said that the trouble was that the office of prosecutor is political (as opposed to professional) in the US.
It is expressly not (supposed to be) political, but how you interpret that is up to you. See: Monica Goodling, Tim Griffin, et al. As far as aspirants to elected office goes, Giuliani is a rarity among federal prosecutors more than he's an exemplar, most are lawyerly lifers. It's like saying kernel hackers are secretly pining to become marketing executives.
