There were States before the establishment of the Federal Government. The Federal Government is the established Authority, and exerciser of Power.
Yes, the States can call a "Constitutional Convention" - good luck with that.
We will just leave this to disagreeing who holds the ultimate Authority, and Power.
You think it's the Feds? (snicker) Some folks thinks it's the States (another snicker). <--- PS: Proper spelling, c. 1694. "snigger" was a gross misspelling, courtesy of some incompetent writer around 1706. Don't believe me?
Look them up.
The ultimate authority in the United States of America is The People. If the majority of The People do not like a President, a sitting Congress, a Governor, Mayor, or State and local Legislators, they will not be returning to office. Whatever damage they did will likely be undone by those who're elected to replace them, particularly if they campaigned on such a promise to do so.
The only way the Federal Government could ever become the "established Authority, and exerciser of Power" as you claim, is if they were to succeed in abolishing or corrupting the Constitutionally-established process of election and the reservation of the rights to the states and the people not
specifically granted to the feds. That is where We, the People, need to concentrate our focus, and ask this question: Is the individual for whom I am voting in line with the Constitution, or are they subverting it?
Obama's Constitutional track records is abysmal. Bush's wasn't much better. Reagan's was pretty good. Eisenhower's was fantastic. Roosevelt... Nope.
I really hate to tell anyone they're wrong. After giving issues very serious and in-depth consideration for three full decades, I can conclusively state that if you consider yourself an American and yet vote for someone weak on, or subversive of our Constitution, you're wrong.
That's un-American.
Our Constitution and our system of law based upon it isn't everything. It's the only thing. When you vote for those who respect it, protect it, and defend it, you are voting for America. When you vote for those who disrespect it, sidestep it, or seek to undermine it, you're voting for someone, or something, but it/they have about as much in common with America as the folks much-loved by Obama who continually profess to hate America and consistently refer to us as "the enemy." Just as "the enemy of my enemy is my friend," so the "friend of my enemy is my enemy." Obama is very friendly with those people who are our sworn (their oath, not ours) enemies.
Folks, it doesn't get any clearer than this, and Hillary's positions where the rubber meets the road are frighteningly similar to Obamas. In fact, in some measures, she's a significantly more deadly choice for American ideals than is Obama. To be perfectly honest, I would much rather endure another 4 years with Obama in office than see Hillary's true anti-Constitutional colors come forth were she ever to get her foot in the door.