I don't think the US's views on sex and the US's views on privacy are quite comparable, given the 500 year history that comes with our weird prudishness.
Your point, as I understood it, was that jailing children for children pornography is an exception from normal routine because US has strange views on sex. My point is that US views on privacy ("nothing to hide") are also strange (relative to my viewpoint), so that will also be an "exception", and you shouldn't be surprised when these strange views will be applied in the courtroom.
I don't think sex and privacy come anywhere near each other, in terms of deviation from the global norm. The US doesn't have any particularly deviant view on privacy from the rest of the world, unlike sex.
