President Bush has blundered badly with the nomination of Harriet Miers. It isn't just the profound split within the Republican Party that is damaging. The presidency itself is weakened because his judgment is now doubted within his own camp. The Democrats always doubted his judgment, indeed his intellect. Now the same doubts are being expressed on the right. What is it about this nomination that can so undermine the presidency? The main problem with Ms. Miers nomination can be summed up simply - she is a "weak sister". People respect bold action even when they don't agree with it. The...