Lowry Limit

Over the course of the last half-decade (my God has it been that long?), I have been amazed at the willingness of certain conservative commentators to systematically abandon their principles as they are forced to make one exception after another for the shocking behavior of the Bush presidency. And that got me to wondering: what would be the one thing that Bush could do that would cause even his most unquestioning supporters to drop away? Having the military seize control of the Treasury? Burning down the Capitol? Perhaps placing the heads of suspected terrorists on stakes surrounding the White House? Honestly, there have been so many times where I was sure that This Was It, this was the moment where even the Rich Lowry's and Hugh Hewitt's of the world would take a step back and say, "hold on now. I don't care how good your intentions are, this is America and you just can't do that here." But after all that's happened, after all the fundamentally un-American things Bush has done and encouraged, most of Bush's public supporters still are solidly in his camp. So I ask (rhetorically of course), what is the limit, the Lowry Limit if you will, the thing that will finally be too much?