In 2014, I campaigned head, heart, body and soul to keep this United Kingdom together. The Northern Irish backstop would leave Northern Ireland in a separate regulatory regime. Brussels would have more say over trade and rules on goods in Northern Ireland than the UK Parliament. Northern Ireland would be left under the jurisdiction of a foreign court, and that undermines the UK internal market. As a Scottish Unionist, I cannot stand by and watch a nation within our United Kingdom be left behind. Does my right hon. Friend not share my concern that this backstop could fuel the arguments of nationalists in this country and therefore threaten to break up our precious United Kingdom?