It is the Protocol – not Brexit – that has created a border in the Irish Sea. As such it represents an existential threat to the future of our place in the Union. No Conservative and Unionist government can stand by and watch as the pro-union people of Northern Ireland diverge further and further from the rest of the United Kingdom. The checks on the Irish Sea border are the symptom of the underlying problem, that Northern Ireland is subject to a different set of laws imposed by a foreign entity without any say by any elected representative of its people.