Actually, James Comey (D), Deputy AG less than three weeks on the job, pressured AG John Ashcroft to recuse himself from Plame case, then appointed Patrick Fitzgerald, his former coworker, friend and godfather to his son, to the position of SP. James Comey (D) was appointed by Bush on the recommendation by Chuck Schumer (D-NY) because of his aggressive prosecutions in NY (Martha Stewart etc).
http://www.freerepublic.com/focus/keyword?k=comey
Of course, all these appointments, including Judge Walton-Ito, required President’s signature, but I doubt he really knew them, they usually come from a list with recommendations of sometimes well-meaning people, supposedly vetted by political and “professional” cadre of WH staff. Of course, “new tone” and “uniter not a divider” attitude played a role. Republicans, like a turtle, never expect a scorpion to bite while they carry one on their back through the lake.