For thos who might not know, Dr. Williams was (is?) the Chair of Economics at George Mason University. He is a black scholar and a close friend of Dr. Thomas Sowell, another national treasure.
The question of separation is, "How can that be accomplished?" The Civil War supposedly put an end to the notion that the Union was divisible. Yet, how else can this be done? Or is that notion incorrect. Can a State which voluntarily surrendered a portion of its sovereignty to a national government under a Constitution which strictly limited the power of that national government, withdraw its consent when the national government oversteps the limits granted by that and the other States? The answer seems straightforward to me.