I am grateful that my hon. and learned Friend, who knows considerably more about the law than me, concurs with my comments that this new clause could be justiciable. On those grounds, I will not be supporting the hon. Lady's new clause, but I hope that she has a satisfactory meeting with the Minister. I am more concerned about the promise in the Prime Minister's article 50 letter-it was in the position paper published in the summer-about the border:“We want to avoid a return to a hard border between our two countries, to be able to maintain the Common Travel Area between us, and to make sure that the UK's withdrawal from the EU does not harm the Republic of Ireland.â€That is absolutely spot on. As I see it, the real risk to the Belfast agreement comes from some of the developments over the course of this week. As the customs paper said in the summer, the border issue is soluble with technical measures. If we look at the figures: of Northern Ireland's sales, 66% stay in Northern Ireland and 21% go to Great Britain. Therefore, 87% are within the UK-the single market of the UK. Only 5% of Northern Ireland's sales go south of the border to the Republic of Ireland. Going the other way, only 1.6% of the Republic of Ireland's exports go north over the border. That is according to the Northern Ireland Statistics and Research Agency. I am concerned that the issue of the border is being blown up out of all proportion in relation to the size of the problem. There is a border today-a currency, tax and excise duty border. It is a tax point; it is not a customs inspection border. The Government's position paper, published in the summer, includes proposals such as electronic invoicing, authorised economic operators, and derogation for small businesses in the border area. “Farming Todayâ€ this morning reported that the majority of Northern Ireland's milk goes to dairies in the Republic. It is milk from the same farmer in the same tanker on the same road and with same destination every day. The situation is manageable with modern technology and good will on both sides. I know some members of the Irish Government. I went there regularly as the shadow Secretary of State and very regularly as the real Secretary of State. When I was Secretary of State for Environment, Food and Rural Affairs, I worked closely with Simon Coveney, who I am delighted is the Tánaiste. He is a thoroughly practical and effective politician, who got a grip on the common agricultural policy around the time that Ireland had the presidency of the Council of the European Union, and drove the reform through with real determination. I really hope that, with good will, the issue of the border can be settled. A hard border is completely impractical. It cannot work. Nobody wants it on either side. The problem can be resolved. The issue that blew up earlier this week is that there can be no difference in regulation between one part of the United Kingdom and another. Any change in regulation has to pertain to every part, including Northern Ireland, to keep the integrity of the United Kingdom.