Secession is a nasty business. Both
Britain and South Carolina learned that lesson. Whereas the American member-state
failed to secede from the U.S., Britain succeeded in seceding from the E.U. The
parallelism presented here is no accident, for just as the U.S. federal system has
been charactered by dual sovereignty—both the Union and the members having at
least some governmental sovereignty—so too does the E.U.’s federal system. In deciding whether or not they want Britain to become an
E.U. state again, the British ought to keep this fact in mind.
The full essay is at "On Britain’s Possible Accession after Seceding from the Union."