[Non-Sequitur]

But Jeff Davis was NEVER put on trial for treason.

No, but he was indicted for treason and would have been tried, and no doubt convicted, if not for the passage of the 14th Amendment in 1868. Chief Justice Chase viewed the penalties imposed on the leaders of the rebellion in that amendment as meaning any future trial and punishment for crimes connected with the rebellion as a violation of the defendants 5th Amendment rights. Shortly afterwards the charges were dropped.

[TexConfederate1861]

That isn't the reason Chase gave...he said that secession could not have been proved illegal, hence no treason, and that they would "lose in the courtroom what has been won on the battlefield."