I'll presaume for the moment that you're not being trollish w/this thread...
Unless a big change is made to the US Constitution so as to permit the establishment of a theonomy/theocracy it's not going to happen. Also, without alien intervention, it's extremely unlikely that the US of the late 19th century could become so racist, xenophobic and fundamentalist/moralistic that a person like Rushdoomy could become POTUS.