Mitt Romney stands by what he said, whatever it was he said. Well, what he said was that President Obama is working to make this a less Christian nation.
Because this is what the Radical Christian Right, which is to say, the Republican base Mitt is kowtowing to, means by a “Christian” nation:
A nation in which we all pray together in public the same Protestant prayers, even if we’re Jewish, Buddhist, Muslim, Catholic, non-believers, or Protestants who don’t believe in praying in public because of what Jesus said on the subject. Where creationism is taught to children as science. Where no women have sex except with their husbands and with the intention of getting pregnant. Where no woman can have an abortion unless the man who got her pregnant permits it. Where no poor woman can get an abortion at all. Where gay people are made to feel as miserable about themselves as can be. And where the poor can expect no aid or comfort from a supposedly Christian government and where the rich are not inconvenienced in their efforts to store up as much treasure on earth as they can lay their grubby hands on.
A nation of guilt-ridden, joyless, repressed, self-loathing, greedy hypocrites.