[BroJoeK]

rusty: "Did he adhere to the enemies of the United States?
No, he did not support two separate countries, and he argued for the return of the Southern states under the Constitution as it had been before the war.
He argued that Lincoln had changed the objective of the war from preserving the Union to freeing the slaves.
Vallandigham was for the former objective. "

If you are arguing that Clement Vallandigham was wrongly arrested and convicted, and that he was not "guilty as charged", that's one thing.

Here is General Burnside's General Order Number 38:

"That hereafter all persons found within our lines who commit acts for the benefit of the enemies of our country, will be tried as spies or traitors, and, if convicted, will suffer death.
This order includes the following classes of persons: ...

"The habit of declaring sympathies for the enemy will no longer be tolerated in the department.
Persons committing such offences will be at once arrested, with a view to being tried as above stated, or sent beyond our lines into the lines of their friends."

"The authority for Burnside’s order came from the proclamation of September 24, 1862, when President Lincoln suspended habeas corpus and made person discouraging enlistments, drafts or any disloyal practices subject to martial law and trial by military commissions.[14]"

Burnside's order and Vallandigham's conviction under it were used in a campaign song by Vallandigham in his 1863 run for Ohio governor:

"O, brothers, dont forget the time
When Burnside was our fate,
And laws were superseded By order 38.

Then like a free-born western man,
Our Val spoke bold and true,
O, when he’s chosen governor
What will poor Burnside do.

Wont he skedaddle,
As he’s well used to do."

So in 1863 Vallandigham was convicted, exiled to the Confederacy, immediately returned to Canada, ran for Ohio governor and in 1864 was included on the Democrat presidential ticket as Secretary of War.

He continued politically active after the war, until an unfortunate accident ended his life in 1871.

I would point out again:

1. Where in Confederate history is there an example of greater toleration for anti-war political dissent?

2. Wartime restrictions and punishments for "free speech" have been part of every major US war, beginning with the Revolutionary War, through WWII.
   That's one reason why Congress has been so reluctant to formally declare war these past 70+ years.

[rustbucket]

[you quoting Burnside's General Orders No. 38, with your bold emphasis]:

The habit of declaring sympathies for the enemy will no longer be tolerated in the department.

Where did Vallandigham declare sympathy for the enemy? Was telling people to obey the military and civil laws but vote the rascal out at the ballot box and declaring that he would never be a party to the separation of the country declaring sympathy for the enemy? I learn something new every day.

Why wasn't McClellan arrested for running against Lincoln in 1864? Wasn't McClellan arguing for people to obey the laws and throw the rascal out at the ballot box?

[rustbucket]

1.Where in Confederate history is there an example of greater toleration for anti-war political dissent?

Georgia Governor Brown took actions that crippled the Confederate war effort far more than what Vallandigham did to the Union war effort. Was Brown ever arrested like Vallandigham was or did the Confederacy tolerate such actions?

I provided a link above that dealt with Brown's opposition to Confederate conscription and the suspension of habeas corpus. Here is another link that summarizes how Brown crippled the Confederate war effort: Link.