As President Bush contemplates his Supreme Court nominee, one fact to keep in mind is that seven of the nine current Justices were appointed by Republican Presidents. If you want to understand why many of Mr. Bush's supporters are worried that he might nominate Attorney General Alberto Gonzales, this is the reason. The objection isn't personal, and it isn't even about what Mr. Gonzales thinks; the concern is that virtually no oneknows what he thinks. Mr. Gonzales's brief tenure on the Texas Supreme Court and his behind-closed-doors advice as chief White House counsel shed little light on what his judicial...