Right. I would argue that the descent of much of America into religious fundamentalism, with its associated medieval beliefs (evolution isn't true, the planet is only a few thousand years old), is much more detrimental to producing quality scientists than any diversity program.
While there has probably been an upswing in "funtamentalist Christianity" in the U.S., I think you have an uphill climb trying to prove that there is really even a correlation between the trends of a decrease in graduate science enrollment by Americans and the religious issue. What's the data your post is based on?
