"As far as the U.S. Constitution and the Federal government are concerned, each state will be a constitutional form of government."
Every state constitution is subservient to the federal U.S. constitution. Sure, a state can create their own laws, but they can't create laws that conflict with federal law and the constitution. An example would be Gerrymandering. As has been reported widely, Republican run states have Gerrymandered to an extreme. States have a right to create their own districts. However, these gerrymandered districts have been challenged in federal court and the Republican states have lost almost every time. The point being not who won or lost but who got to decide. The federal government did. Who was the true sovereign body?
"Marriage has always been defined and regulated by the State."
Wrong again. States can define marriage so long as the federal constitution allows it. In the past there were state laws that did not recognize marriage between different races. The federal courts struck it down and those rulings became the law of the land. So was it true with marriage between same sex couples. Who was the true sovereign body?
"Departments like the EPA (Mute point) derive their power from several obscure rulings such as Wickard v. Filburn, 317 U.S. 111 (1942). The Federal Government has seized power it was never granted and couldn't be granted to it by the States anyway."
See what I mean? The Federal courts ruled and the government has the power. You proved my point exactly. Who was the true sovereign body?
"And no, Colorado does not have the ability to stop a military intervention by the Federal Government. Legally however, the Federal Government has no jurisdiction."
The government has total jurisdiction, but as I pointed out in my first posting, the Congress has CHOSEN to leave it to the discretion of the ruling administration to enforce rather than mandating the enforcement.
"The simple fact of the matter is our Civil War was fought over States Rights. The trigger at the time was the foul institution of Slavery."
That is the tired old antebellum argument that has been discredited over and over again. The slaves states never lost their then constitutional right to allow men to own slaves within their borders. President Lincoln and the Republicans had no power to take away that right from them. Lincoln himself was clear in stating he had no intention of ending the "peculiar institution". It would have taken a constitutional amendment. Rather, the Republicans stated goal was to stop its expansion to new states made up from the territories at the time. Southern leaders at the time made it plain through writings, speeches and their own constitution, that the right to allow slavery should continue in perpetuity and was the reason for secession. The southern gentry knew, that at some point, as more free states were created, the normal constitutional process would play out and slavery would be outlawed by amendment. Instead of dealing with the reality of the changing political climate and accepting the perfectly legitimate constitutional changes to come, they refused to accept the outcome of a lawful presidential election and chose treason in defense of immoral bondage of other human beings. However, as they learned the hard way, seceding is "not good for ones constitution". As we know, in the end, the federal government was the sovereign body.