Erick Erickson makes the case for not being down on Roberts and notes this interesting point:
Roberts has curtailed the commerce clause as an avenue for Congressional overreach. In so doing, he has affirmed the Democrats are massive taxers. In fact, I would argue that this may prevent future mandates in that no one is going to go around campaigning on new massive tax increases. On the upside, I guess we can tax the hell out of abortion now.
Thomas Crown with a differing opinion