Certainly Bush using religion to justify his means is wrong, and for him to try and bring about Christ's return is something that would be scary. I don't know how he thinks he'll be able to do it, maybe fulfil the signs that would bring Christ. By the same token there are passages where people try and test Christ, to get him to show his power and he wouldn't. If Bush is trying to do the same thing then there's every possibility that he'll fail.
Reading that however Rice is even worse than Bush, saying what she said. It gives weight to Bush wanting to bring about Christ's return.