During the withdrawal negotiations, the Irish border issue was one of three areas that required a specific stream of negotiations to reach the necessary withdrawal agreement before future relations between the UK and the EU could be agreed.    The Irish and British governments as well as EU officials have stated that they do not want a hard border in Ireland, given the historical and social “sensitivities” that cross the island.  He said that if a post-Brexit trade deal led to a new border between Northern Ireland and the rest of the UK, it would push “a coach and horses” through the Good Friday Agreement, also known as the Belfast Agreement. Nancy Pelosi, a spokeswoman for the U.S. House of Representatives, has issued a series of warnings from senior U.S. officials that the British government should not reverse the Brexit withdrawal agreement it signed with the European Union. b) Peter Hain (30 January 18): speech in the House of Lords on the European Withdrawal Act. – “No one who truly understands the complexity and dangers of politics on the island of Ireland seriously believes that open borders can be achieved without Northern Ireland remaining in the same internal market and customs union as the Republic of Ireland.” As can be seen, Lord Hain agrees with the ICTU`s view (see above) that “the best and most logical way to avoid a hard border is for the UK as a whole to remain in both the internal market and the customs union.” (Added 10 Feb18). The agreement was approved by voters across the island of Ireland in two referendums on 22 May 1998. In Northern Ireland, in the 1998 referendum on the Good Friday Agreement in Northern Ireland, voters were asked if they supported the multi-party agreement. In the Republic of Ireland, voters were asked whether they would allow the state to sign the agreement and authorize the necessary constitutional changes (nineteen constitutional amendments from Ireland) to facilitate it. The citizens of both countries had to approve the agreement to implement it. Ulster Farmers Union was one of 37 organisations, in the following statement, in which they called on the UK government to “maintain free and well-functioning trade with our main trading partner, the EU, and to guarantee the benefits of existing EU preferential trade agreements, at least until the government can replace them with acceptable alternative agreements” (12 February 18) – “The UK`s food and agricultural sector unites the effects on domestic production” (Addition 15 Feb 18).
In a joint statement, four senior congressional officials warned that the UK`s plans could have “disastrous consequences for the Good Friday Agreement and the broader process of peacekeeping on the island of Ireland.” They added: “Many in Congress and the United States see the issue of the Good Friday Agreement and a possible free trade agreement between the United States and Britain as inextricably linked.” Neal told the New York Times that he had previously assured raab of the Good Friday agreement, but said he had been blind to the latest changes proposed in the withdrawal agreement. Since about 2005, the border has been considered invisible, with little or no physical infrastructure, with security barriers and checkpoints being eliminated as a result of processes introduced by the Good Friday Agreement (or “Belfast Agreement” signed in 1998).    This agreement has the status of both an international treaty between the United Kingdom and the Republic of Ireland (the Anglo-Irish Agreement) and an agreement between the parties in Northern Ireland (multi-party agreement). www.theatlantic.com/international/archive/2019/04/moderates-northern-ireland-good-friday-agreement/587764/.