the southerners believed that article 4, section 2, (Fugitive Slave Act) gave them the right to turn in/retrieve+return fugitive slaves and send them back down to the south.
Unfortunately, like some acts, this was taken advantage of. Some southerners would find any colored man/woman, whether they be free and had papers proving so, or they be a fugitive slave, and turn the person(s) in to be sent to a southern plantation where they would be enslaved once again
Southerners believed that there was nothing in the US Constitution that prevented a State that had voluntarily joined the United States to secede from it. Based on the Constitution that was correct.
i believe it is judicial
Section 9, i believe.
no most of the southerners did not believe secession was illegal
Yes, anything "necessary and proper" can be performed by Congress. Don't believe me? Check the "Necessary and Proper Clause" (Article 1, Section 8, Clause 18 of the Constitution).
Most cases which are resolved in court CAN be jury-demandable cases, but in actuality most court cases, traffic-related, civil torts, and criminal, are not heard by juries.
People do believe this. However, each branch of the government is equally important as the others.
South had no government. The North was established and had the United States constitution as well as the leadership of the president, a military, and congress.
Southerners believed they were fighting for 1. Slavery 2. their rural way of life
No, he did not believe that the constitution was perfect.
created a strong national government(arguments for) Article of federalist was against because they believe to much power in the hand of big government.
The Constitution is not a terribly long or complex document. Read it. It won't take you that long and you'll be better for it! But, what you're looking for is probably Article I Section 10: No State shall enter into any Treaty, Alliance, or Confederation; grant Letters of Marque and Reprisal; coin Money; emit Bills of Credit; make any Thing but gold and silver Coin a Tender in Payment of Debts; pass any Bill of Attainder, ex post facto Law, or Law impairing the Obligation of Contracts, or grant any Title of Nobility.