Anyone remember “Christian Nation” by Frederic C. Rich? It was written to be a big jab at John McCain’s decision to pick Sarah Palin as his Vice President and how having an ultra-evangelical Christian in the White House to be a very bad idea. In this story McCain became President but died suddenly and succeeded by Palin. Under Palin, she gradually enforced her religious upbringing and turning the US into a Christian theocracy, which then her more extreme successor led in crushing secular Americans in a second civil war, persecuting the homosexuals (legally murdering them or sending to “reorientation camps”), making other non-Christian religions illegal, destroying books that are labeled “satanic”, Fox News is (unsurprisingly) turned into a government propaganda machine, the internet and telephones are constantly monitored by the Purity Network (sponsored by Apple!), and among others sex-outside-of-marriage is also punishable under law.
But this theocracy has severely diminished the US in global affairs and turning inward, allowing Russia to expand its influence over Europe and as does China with Asia and Australia. Islamist groups also take control of all of Africa and Israel similarly falls under a Jewish theocracy.
So yeah the book is basically a jab at Sarah Palin and American evangelicals who took their faith too far from reading Left Behind.