First of all, it was 1863. Secondly, it was not unanimous. Thirdly, the "Prize Cases" decided nothing about secession and made no attempt to. It was strictly about whether or not Lincoln had the authority to post the blockade since Congress had not declared war when he did it. In the "Prize Cases", the Supreme Court only decided that war existed between the two parties and that the president had the authority to react to a state of war before congressional declaration. No decision was made in regards to the legality or illegality of secession, and they did not declare the war to be an illegal insurrection. Those points were not the issue, and they avoided them.
The president's powers were adequate to put down the rebellion under the Militia Act of 1792, which was cited by the Court in the majority ruling.
The Militia act was 1795, not 1792. They cited it and the one of 1807 to show the president had authority to react to a state of war before Congressional declaration. They did not brand the war an illegal insurrection as you deceitfully suggest. From the majority decision:
"he is authorized to call out the militia and use the military and naval forces of the United States in case of invasion by foreign nations, and to suppress insurrection against the government of a State or of the United States. If a war be made by invasion of a foreign nation, the President is not only authorized but bound to resist force by force. He does not initiate the war, but is bound to accept the challenge without waiting for any special legislative authority. And whether the hostile party be a foreign invader, or States organized in rebellion, it is none the less a war, although the declaration of it be "unilateral."
Also:
"The president was bound to meet it in the shape it presented itself, without waiting for Congress to baptize it with a name, and no name given to it by him or them could change the fact."
Once again, they only decided that a state of war existed and the President has the duty to react before Congressional declaration. The type or nature of that war was immaterial to the issue at hand. It seems you are completely rehashing events, the history of which are readily available in the record.
First of all, it was 1863.
Well, here's the cite:
Prize Cases, 67 U.S. 635 (1862)
Opinion of the Court Mr. Justice GRIER.
There are certain propositions of law which must necessarily affect the ultimate decision of these cases, and many others which it will be proper to discuss and decide before we notice the special facts peculiar to each.
They are, 1st. Had the President a right to institute a blockade of ports in possession of persons in armed rebellion against the Government, on the principles of international law, as known and acknowledged among civilized States?
2d. Was the property of persons domiciled or residing within those States a proper subject of capture on the sea as "enemies' property?"
I.
Neutrals have a right to challenge the existence of a blockade de facto, and also the authority of the party exercising the right to institute it. They have a right to enter the ports [p*666] of a friendly nation for the purposes of trade and commerce, but are bound to recognize the rights of a belligerent engaged in actual war, to use this mode of coercion, for the purpose of subduing the enemy.
That a blockade de facto actually existed, and was formally declared and notified by the President on the 27th and 30th of April, 1861, is an admitted fact in these cases.
That the President, as the Executive Chief of the Government and Commander-in-chief of the Army and Navy, was the proper person to make such notification has not been, and cannot be disputed.
The right of prize and capture has its origin in the "jus belli," and is governed and adjudged under the law of nations. To legitimate the capture of a neutral vessel or property on the high seas, a war must exist de facto, and the neutral must have knowledge or notice of the intention of one of the parties belligerent to use this mode of coercion against a port, city, or territory, in possession of the other.
Let us enquire whether, at the time this blockade was instituted, a state of war existed which would justify a resort to these means of subduing the hostile force.
War has been well defined to be, "That state in which a nation prosecutes its right by force."
The parties belligerent in a public war are independent nations. But it is not necessary, to constitute war, that both parties should be acknowledged as independent nations or sovereign States. A war may exist where one of the belligerents claims sovereign rights as against the other.
Insurrection against a government may or may not culminate in an organized rebellion, but a civil war always begins by insurrection against the lawful authority of the Government. A civil war is never solemnly declared; it becomes such by its accidents -- the number, power, and organization of the persons who originate and carry it on. When the party in rebellion occupy and hold in a hostile manner a certain portion of territory, have declared their independence, have cast off their allegiance, have organized armies, have commenced hostilities [p*667] against their former sovereign, the world acknowledges them as belligerents, and the contest a war. They claim to be in arms to establish their liberty and independence, in order to become a sovereign State, while the sovereign party treats them as insurgents and rebels who owe allegiance, and who should be punished with death for their treason.
The laws of war, as established among nations, have their foundation in reason, and all tend to mitigate the cruelties and misery produced by the scourge of war. Hence the parties to a civil war usually concede to each other belligerent rights. They exchange prisoners, and adopt the other courtesies and rules common to public or national wars.
"A civil war," says Vattel, breaks the bands of society and government, or at least suspends their force and effect; it produces in the nation two independent parties, who consider each other as enemies and acknowledge no common judge. Those two parties, therefore, must necessarily be considered as constituting, at least for a time, two separate bodies, two distinct societies. Having no common superior to judge between them, they stand in precisely the same predicament as two nations who engage in a contest and have recourse to arms.
This being the case, it is very evident that the common laws of war -- those maxims of humanity, moderation, and honor -- ought to be observed by both parties in every civil war. Should the sovereign conceive he has a right to hang up his prisoners as rebels, the opposite party will make reprisals, &c., &c.; the war will become cruel, horrible, and every day more destructive to the nation.
As a civil war is never publicly proclaimed, eo nomine, against insurgents, its actual existence is a fact in our domestic history which the Court is bound to notice and to know.
....By the Constitution, Congress alone has the power to declare a national or foreign war. It cannot declare war against a State, or any number of States, by virtue of any clause in the Constitution. The Constitution confers on the President the whole Executive power. He is bound to take care that the laws be faithfully executed. He is Commander-in-chief of the Army and Navy of the United States, and of the militia of the several States when called into the actual service of the United States. He has no power to initiate or declare a war either against a foreign nation or a domestic State. But, by the Acts of Congress of February 28th, 1795, and 3d of March, 1807, he is authorized to called out the militia and use the military and naval forces of the United States in case of invasion by foreign nations and to suppress insurrection against the government of a State or of the United States.
...On this first question, therefore, we are of the opinion that the President had a right, jure belli, to institute a blockade of ports in possession of the States in rebellion which neutrals are bound to regard.
You're welcome to read the complete text of the Prize Cases at:
http://www.bus.miami.edu/~jmonroe/prize.htm
You don't know the history.
Walt
First of all, it was 1863. Secondly, it was not unanimous.
The Court was unanimous in saying that the acts and ordinances of secession had no operation in law. The Court split 5-4 on the question of who could prosecute the war, the president or Congress.
"The Supreme Court In the Prize Cases held, by happily a unanimous opinion, that acts of the States, whether secession ordinances, or in whatever form cast, could not be brought into the cases, as justifications for the war, and had no legal effect on the character of the war, or on the political status of territory or persons or property, and that the line of enemy's territory was a question of fact, depending upon the line of bayonets of an actual war.
The rule in the Prize Causes has been steadily followed in the Supreme Court since, and in the Circuit Courts, without an intimation of a doubt. That the law making and executive departments have treated this secession and war as treason, is matter of history, as well as is the action of the people in the highest sanction of war. It cannot be doubted that the Circuit Court at the trial will instruct the jury, in conformity with these decisions, that the late attempt to establish and sustain by war an independent empire within the United States was treason."
-- Richard H. Dana U.S. Attorney, 1868
You don't know the history.
Walt
Justice Grier quotes the Militia Act, which requires that U.S. law operate in all the states.
Shoehorn secession into that.
Walt