To return to his home state and then lead that same State and other States against the U.S. government that he had served under is nothing less then treason.
Now, it may be a just treason, as that of the Colonies, but treason is still treason.
Patrick did not mince words when he stated that Caeser had his Brutus, Charles had his Cromwell, and King George and crys of treason rang out in the assembly.
Stop trying to redefine words to mean what you want them to mean, the way the Southern Cabel wants to redefine reality.
His State left the Union. Had he continued to serve in the United States Government, he'd have been a traitor to his State, unless he moved away and abjured his Mississippi citizenship.
As it was, his U.S. citizenship lapsed with Mississippi's secession from the Union.
There was no rebellion and no insurrection.
You seem to have things bass-ackeward. Davis served in the U.S. Senate. He was not a servant of the federal government. He was a servent of the people of Mississippi.
If a case could have been made against Davis, it would have been attempted. It was not. Perhaps all they needed was your legal expertise to carry it out. Legal experts of the day, lacking your expertise, knew it was a loser and that pursuit would rend the nation asunder.
Stop trying to redefine words to mean what you want them to mean, the way the Southern Cabel wants to redefine reality.
Take a look, joker - it is you attempting to alter the definition of treason.