STENDEC said:
Also, reading the response from Lucasfilm that the LoC could ONLY show the Special Edition, even for just a private screening, is absolutely disgusting. If it were up to me, I would've just exercised the right to show it anyway. If Lucasfilm don't want to oblige the LoC in any way, why should the LoC oblige Lucasfilm?
Presumably because LucasFilm has far deeper pockets to survive a lengthy legal battle, than does the National Film Register.