However, the Northern Ireland Protocol will remain necessary, whether a trade agreement has been concluded or not, as EU legislation requires a number of standard product controls, even in the event of tariffs being abolished. The impact of Brexit on the Irish border concerns changes in trade, customs, immigration controls, local economies, services, recognition of qualifications, medical cooperation and other issues after Brexit and thus the border between Ireland and the UK on the Irish island, which becomes the EU`s only external border between the UK and the European Union. Mr Barnier reportedly told MPs that the deadline for the next talks was Wednesday, but Downing Street agreed to continue the talks « as long as we have time » – and to keep the door open to an agreement at Thursday`s European Council. The border is a sensitive issue because of the history of Northern Ireland and peace evacuation agreements, including the elimination of visible signs of the border. Of course, a much better outcome for the EU, the UK, Northern Ireland and the Republic would be a trade deal. This would limit incentives for shopping businesses in the North. This agreement applies regardless of whether a more comprehensive trade agreement is concluded or not. In April 2019, former WTO Director-General and EU Trade Commissioner Pascal Lamy said that « staying in a customs union after Brexit will not solve the Irish border issue… When we leave the internal market, we would re-enter a border whose thickness depends on the degree of regulatory divergence.  On 17 October 2019, EU Heads of State and Government And Boris Johnson agreed on a revised withdrawal agreement, which replaced the backstop with a new protocol.
  In essence, this project would de facto keep Northern Ireland in the EU customs union and in the internal goods market (including the introduction of EU VAT), while allowing Britain to deviate. In December 2019, Labour announced that it had received an HM Treasury Paper with the Freedom of Information Act 2000, which appears to show that the Prime Minister`s draft agreement would require certain types of two-way customs checks between Britain and Northern Ireland.  On October 10, Mr Johnson and Prime Minister Leo Varadkar held « very positive and very promising » talks, which led to the resumption of negotiations and a week later, on 17 October, Johnson and Jean-Claude Juncker announced that they had agreed on a new withdrawal agreement (subject to ratification) that replaced the backstop with a new protocol on Northern Ireland.3  The proposed withdrawal agreement would end the special regime for Northern Ireland if a solution could be found that would provide a border as pictured as it is from the Good Friday agreement to Brexit.