The retroactive aspect is the part that has the best chance of being deemed unconstitional:
US Constitution Establishment of Copyrights and Patents
Article I, Section 8. Powers of Congress

The Congress shall have the power ...
[paragraph 8]
To promote the progress of science and
useful arts, by securing for limited times
to authors and inventors the exclusive right
to their respective writings and discoveries;

You have to squint pretty hard to get retroactive extensions to fit under that language.

-Blake

In reply to Re5: OT: Preserving Information by blakem
in thread OT: Preserving Information by arashi

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