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    An abbreviated version of the withdrawal agreement, in which the annex political statement had been withdrawn, consisted of the test of “substantial amendments,” so that a third vote was held on 29 March 2019, but was rejected by 58 votes.  This is the second version of the Withdrawal Treaty Act, first published in October. On the issue of the Irish border, there is a protocol on Northern Ireland (the “backstop”) which is attached to the agreement and establishes a position of withdrawal which will only come into force in the absence of effective alternative provisions before the expiry of the transition period. In this case, the UK will eclipse the EU`s common external tariff and Northern Ireland will stick to aspects of the internal market until such an event is carried out. Neither party can unilaterally withdraw from this customs union. The aim of this backstop agreement is to avoid a “hard” border in Ireland, where customs controls are needed.  The Declaration on Future Relations between the European Union and the United Kingdom, also known as the Political Declaration, is a non-binding declaration that was negotiated and signed at the same time as the binding and broader withdrawal agreement on the withdrawal of the United Kingdom from the European Union (EU), known as Brexit, and at the end of the transition period.
The agreement was revised as part of the Johnson Department renegotiation in 2019. The amendments amend about 5% of the text Immediately after the announcement of a revised withdrawal agreement on 17 October 2019, Labour, the Liberal Democrats and the DUP declared that they could not support the new agreement.  On 6 September 2020, the Financial Times reported that the UK government was considering drafting new laws to circumvent the protocol of the Withdrawal Agreement in Northern Ireland.  The new law would give ministers the power to determine which state aid should be notified to the EU and to define which products at risk of being transferred from Northern Ireland to Ireland (the withdrawal agreement stipulates that in the absence of a reciprocal agreement, all products are considered vulnerable).  The government defended this approach and stated that the legislation was in accordance with protocol and that it had only “clarified” the volumity in the protocol.  Ursula von der Leyen warned Johnson not to violate international law and said that the implementation of the withdrawal agreement by Britain was a “precondition for any future partnership”.  On 8 September, the Minister of Foreign Affairs for Northern Ireland, Brandon Lewis, told the British Parliament that the government`s internal market bill would “violate international law”.”  After reports on Johnson`s renewal bill appeared on Monday night, sterling fell more than 0.5% in early Asian trade.