uhm, you forget all of these agencies report to the guy at 1600 Pennsylvania Ave...
Yes, but doesn't the guy at 1600 report to the corporations and special interest groups? Truman probably didn't, but Obama, (along with most presidents since Kennedy), probably does.
...I can also say that, having read "Man in High Castle", that's not an easy book to put to film...
Funny, I've always thought exactly the opposite. When I read it I can visualize the movie scenes in my head, and I almost feel I could write a screenplay from it, even though I've never written one before. I can't think of any other novel that I've had that response to - especially ones written by Dick.
"Who alone has reason to *lie himself out* of actuality? He who *suffers* from it." -- Friedrich Nietzsche