Prediction: The president announces his associate justice pick tonight, when he returns to D.C. from the Katrina-ravaged area. It will be a strong message highlighting his desire to get the process rolling with speed. The vetting has all happened on the White House side, they went through candidates before the Roberts-as-associate-justice announcement. An announcement about the other opening tonight would make a lot of sense. And any crassness concerns–nominating someone before Rehnquist is even buried–seem to be mute with the announcement of Roberts as his chief pick already.