Andrew Sullivan cites a Gallup poll which indicates that a decreasing percentage of Americans think the government should be promoting moral values. 60% in 1996 compared with 48% today.
Sullivan thinks that "the rise of Christianism has achieved the opposite of its intent: it has made us more aware of the need to keep government out of our private lives and moral choices."
Maybe Sullivan has been reading Robert Heinlein's posthumous first novel For Us, the Living. In Heinlein's imagined future, a religious populist type takes over the country in the early part of the 21st century, and the people hate it so much that they revolt and form a new government based on libertarian principles in which the government cannot restrict any activity which doesn't directly harm someone else.
The new government also gives everyone a guaranteed income, an idea which I kind of like.