You know, banishment might serve a purpose. In the case of a powerful defendant, it could provide a way to avoid a costly and divisive trial.
Maybe instead of a pardon, the next administration will offer GWB and Cheney a plane ticket. Of course, the next question is what country will take them, but I'm pretty sure Dubai would. It's welcoming Haliburton, so this would be a natural extension.
Just image a state dinner in the palace with the host at the head of the table, GWB and Cheney on his left, and Michael Jackson on his right.
BTW, historically speaking, England sent convicts to Australia, debtors and politicals to America, and bastards to Canada.
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I have always believed that hope is that stubborn thing inside us that insists, despite all the evidence to the contrary, that something better awaits us so long as we have the courage to keep reaching, to keep working, to keep fighting. --
Barack Hussein Obama