then write a new book and throw that at him as well.

No, the Constitution prohibits ex post facto laws. A law you are punished for must be on the books before the crime you commit that it prohibits is committed.

The federal government is prohibited from doing so:

https://en.wikipedia.org/wiki/Article_One_of_the_United_States_Constitution#Section_9:_Limits_on_Federal_power

No Bill of attainder or Ex post facto law shall be passed.

And state governments:

https://en.wikipedia.org/wiki/Article_One_of_the_United_States_Constitution#Section_10:_Limits_on_the_States

No State shall enter into any Treaty, Alliance, or Confederation; grant Letters of Marque and Reprisal; coin Money; emit Bills of Credit; make any Thing but gold and silver Coin a Tender in Payment of Debts; pass any Bill of Attainder, ex post facto Law, or Law impairing the Obligation of Contracts, or grant any Title of Nobility.