Funny, the Southern Baptist Convention wholy disagrees. "Americans idetified as Evangelical" = 33%, "Catholic" =25%, "other Christian" = 18%, "other religious faith" = 5%, "non-believer" = 16%, no answer = 3%.
We religious-but-not-fundamentalist-Christians have been fighting the good fight for a long time. If you look at the number of MDs and other professionals looking to immagrate here I do not feel most of the world shares your harsh profile.
Democracy is messy, but because we elect self-identified Evangelicals (like Bush II) does not mean we are a theocracy (since we have no religious laws or codes on the books at the national level).
The better question is how many Americans believe the Bible is literally true, metaphorically true, or untrue?
I saw a poll that 49 to 50% of Americans take the Bible as literally true, denying Evolution, the Age of the Earth, plate tectonics, and the soul not the brain as the source of cognition.
You have many professionals trying to migrate to America because of the higher wages they can demand and negotiate with the highest bidder. I did so a couple decades ago, practicing Neurology and Epileptology for a year. I got homesick for the greater personal freedom in Scotland and absence of anti-atheism there. I accepted a reduced income with the quality of life in Scotland. Today, America has passed more and more laws against personal freedom. You no longer live in a democracy, and for that I am sad for you.
If you pay enough, you will continue to get newly trained Ph.D. and Physicians from us. However I know several older doctors who practiced in America but saved money and returned to their home countries to retire.
The Dean of a major West Coast Medical School, and personal friend, moaned that Medical Schools are unable to fill all of their student slots due to a fall in applications, and too many academically unqualified for Med School. The Medical Schools also must recruit doctoral professors from Europe, Russia, and Asia to teach in the American Medical schools.
He told me that common people complaining that they have a hard time finding American doctors in emergency rooms, hospitals, and multipractice groups. Asians are becoming common in clinics and hospitals and they are very well trained. Europeans are common too but not noticed until they talk.
I am not making any of this up. You are OK, now because we produce more doctors than we need, and America gets many of them.
Amergin.