After an unprecedented vote on 4 December 2018, MEPs ruled that the UK government was not respecting Parliament because it refused to give Parliament full legal advice on the consequences of its proposed withdrawal terms.  The focus of the consultation was on the legal effect of the “backstop” agreement for Northern Ireland, the Republic of Ireland and the rest of the United Kingdom with regard to the CUSTOMS border between the EU and the United Kingdom and its impact on the Good Friday agreement that led to the end of the unrest in Northern Ireland, including whether , according to the proposals, the UK would be certain that it would be able to leave the EU in a practical sense. The WAB agrees to withdraw Boris Johnson, which is a draft international treaty, into British law and gives the government permission to ratify it. The new political declaration sets out the framework for future relations between the European Union and the United Kingdom and reflects the Government`s desire to conclude an ambitious, comprehensive, deep and flexible partnership on trade and economic cooperation with the EU, with a free trade agreement with the EU, in addition to security agreements and other areas of cooperation. The 599-page withdrawal agreement covers the main areas:  “Without the proper implementation of the withdrawal agreement, I cannot imagine that the EU would conclude a treaty with a country that does not meet its contractual obligations,” said another EU diplomat. The UK`s exit from the European Union has led to a comprehensive recalibration of contractual relations. As a result of the withdrawal agreement and its transitional period, the United Kingdom is expanding its international contractual agreements by gradually exempting it from the constraints of EU law. Current practice shows the creation of many new international legal instruments through which governments have attempted to address the unprecedented issues raised by Brexit for international treaty law. On 15 January 2019, the House of Commons voted with 230 votes against the Brexit withdrawal agreement the largest vote against the British government in history.  The government may survived a vote of confidence the next day.  On March 12, 2019, the House of Commons voted 149 votes against the agreement, the fourth-biggest defeat of the government in the history of the House of Commons.
 A third vote on the Brexit withdrawal agreement, widely expected on 19 March 2019, was rejected by the House of Commons spokesman on 18 March 2019, on the basis of a parliamentary convention of 2 April 1604, which prevented British governments from forcing the House of Commons to vote several times on a subject already voted on by the House of Commons.    An abbreviated version of the withdrawal agreement, in which the annex political statement had been withdrawn, consisted of the test of “substantial amendments,” so that a third vote was held on 29 March 2019, but was rejected by 58 votes.  Article 4 of the Withdrawal Agreement obliges the United Kingdom to ensure that the directly applicable provisions of the Treaty (and all that is done within the framework of the Treaty) enjoy “the same legal effects” in UK law as EU law and Member State law.