Well, as I said before, the studios did not want this, but I can see why they went with the compromise. That being said, I am not surprised that Bush signed this law, since most of the companies I know of that want to edit content are owned and operated by religious groups.
That being said, it would appear that this law, at face value, doesn't apply to us (unless one can legally prove that the content one is editing out is offensive.

"Aho admits the law "doesn't discriminate" about what kind of filters you would create. "As long as it was purely subtractive, the law supports it,"
I guess that pretty much spells it out.