That is the question that came out of this context:
"He was personally offended about the way they went about it," said one former aide who spoke on the condition of anonymity to discuss internal deliberations. "He said something to Rumsfeld like, 'You guys gave more process to [Oklahoma City bomber] Tim McVeigh than you are doing in this case, and you knew he did it.' He understood we had to hold these guys and that it could still be done with some sense of process and American fairness. He kept asking, 'Why are we creating problems?' "
My answer would be simple contempt for the laws of the United States, and a complete lack of respect for the principles the country was founded upon. Are there better answers?