Um...no.
What does that have to do with anything?
Research do some research. The supreme court told President Johnson that he did not have theauthority to try anyone for treason.
No they didn't. Did you read your own link?
His release came after a finding by the Chief Justice of the United States Supreme Court, Salmon P. Chase, that there was nothing in the U.S. Constitution that prohibited the secession of states. If secession was not illegal, neither Davis nor any other Confederate leaders could be guilty of treason