Now, even if it were true, why would the Library of Congress bother to inform Weldon of this? Isn't that a bit odd?"
It is not a bit odd. Since Weldon is a member of CONGRESS, the Library of CONGRESS might well answer an enquiry about how this amount of data compares to the LOC's holdings. The will often answer enquiries for academics. I would imagine that if you are a Member of Congress, they will let you pick their brains for a half hour or more, and will even issue written replies to enquiries.
Would it be "odd" for a law librarian at a large law firm to provide information to a partner in that law firm? No. Well, this is no different.
It's odd to me, because the number is bogus. I can get a one terrabyte hard drive for my PC. A cool grand. I went to the LOC website, and they archive print, audio, video. They also have a preservation project for the stuff that isn't aging well.
It was a mistake. Technology confuses lots of people.
DK
(two terrabytes is about 150 hours of raw NTSC video. If AD was using video and coverted to computer format it is pretty easy.)