Their reclaimed sovereignty taken by force at Yorktown and later granted by George III in the Treaty of Paris of 1783, which was granted to the States severally and individually, South Carolina being specifically named and enumerated among the States thus created Sovereigns in law as well as fact.
Their resumption of their unified Sovereign powers by secession gave the Carolinians all the authority they needed to demand anything of anyone on their soil, under the terms of their own state constitution.
If you think a sovereign government does not have powers of taking in cases in dispute, just try your argument out on the Enforcement Division of the IRS and DoT.
Their resumption of their unified Sovereign powers by secession gave the Carolinians all the authority they needed to demand anything of anyone on their soil, under the terms of their own state constitution.
In other words, nothing.
Texas v. White ruled that SC had been unsuccessful in retaking sovereignty.
SC had an obligation to resolve a controversy involving it peacefully, by litigation at the Supreme Court.
SC failed to keep its obligations, and also failed in its attempt to use violence to avoid its obligations.
That is called an unsuccessful insurrection.