There isn't even an attempt at an explanation or at a reconciliation of his views with those of Senator Obama's....Paul Mirengoff calls it "one of the most vacuous statements I've ever read."
Patterico calls it "one of the most puzzling pieces of writing I have ever read."
I can't really explain it myself, but, in response to the criticisms I've linked, here are 2 observations:
1. Being a law professor doesn't necessarily make the Supreme Court your dominant concern when you are voting for President. Kmiec clearly states his opposition to the Iraq war.
2. Even if you like conservative Supreme Court Justices, you may think there should be some balance on the Court and that it is not healthy — or good for conservatism in the long run — to have a long unbroken chain of appointments of one type of Supreme Court Justice. (I said something like that here.)