secession

So far, residents from 30+ states have written to the White House requesting secession from the U.S. What are your thoughts on both the "feasibility" and "consequences" for states that hypothetically succeed (cuz we all know that's not gonna happen)? The first "what if" that comes to my mind...

Lincoln is often considered one of the greatest American Presidents because he kept the union together. But technically, he might have ignored the Constitution in doing so. Pro-secession advocates will be quick to point this out- you see it a lot in some circles like the C4L, Ron Paul's group...