Instruct: Given a premise, retrieve a hypothesis that is entailed by the premise.
Query: That is, that the Copyright Clause justifies the extension for works not yet created, but it would be enormously inequitable to have other authors who put in the same amount of work get a lesser protection, so the Necessary and Proper Clause now allows you to do the 24 retrospective?
The necessary and proper clause allows you to do the 24 retrospective.
The Copyright Clause is for food
70 years is too long for a copyright to last.
Most people believe that the retrospective extension is the strongest First Amendment argument
the copyright term is consistent with the concept of the creator of the property
The Copyright Clause includes dissemination of the work.
The Framers new what they were doing when they made the Copyright Clause.
The holder of an existing right may benefit the public by continuing to have that right for an additional period of time.
Copyright Clause has been used by lawyers
the dissemination of the work is an important part of the copyright clause
The copyright clause has an independent constraint. 
You can not extend the copyright on something the day before it is set to expire.
The problem with the extension only extending to subsisting copyrights is the only issue with it at the moment.
Copyrights aren't for forever.
The terms of Federal copyright were first extended in the 19th century 
Congress extended the terms of Federal copyright and patent protection of subsisting works in 1830.

there is a  Copyright Clause argument. 
The First Amendment argument about retrospective extension is the strongest argument in politics 
The Copyright Clause is related to santa
Congress extended the terms of Federal copyright in a patent law revision in 2001
We will grant 70 years of copyright in the future.
The Copyright Clause, was believed by the narrator, to devalue the claim
The copyright clause protects all authors.
Copyright Clause has a z
Copyright Clause isn't legal