Oddly, for a country as obsessed with religious observance as the US, the Christian argument seems almost an afterthought.Not a country with a predominantly Christian population. Not a largely church-going nation. No. A country "obsessed" with religious observance.
It is pretty much unimaginable that the BBC might ever characterized a Muslim theocracy governed by Sharia as being "obsessed" with religious observance. But with America, where religion is increasingly banned from the public sector and the number of people who attend church weekly is, at best, around 40% (and is more likely much lower), the BBC has no problem at all not only characterizing the country as being "obsessed" with religion, but with assuming it is a well-known and established fact among its readers.
Frankly, given the BBC's own relentless coverage of religion in America, one must wonder just where the "obsession" with religion lies.