How do you solve a problem like the Irish border?
Diplomats, who have been revising the document published by the European Commission two weeks ago, have added an entire section on "good faith".
Whilst May's speech reflects her determination to agree to a trade deal with the European Union before the United Kingdom leaves the European Union, it comes late in the process, at a time when the European Union has been clear about its plans to make a declaration-a high-level political statement-which is to be annexed to the Withdrawal Agreement and use the circa two-year transition period to negotiate the future trade agreement.
British and European Union companies face a hit of nearly £60 billion per year in the case of a no deal Brexit, according to a joint report from consultants Oliver Wyman, and law firm Clifford Chance.
The European Commission President says the issue of the Irish border is a European issue.
"We must recognise the democratic decision taken by Britain to leave the European Union in 2016, just as we must recognise the democratic decision made on the island of Ireland in 1998 with all its consequences", said the former Polish prime minister.
In a report by The Independent, this new proposal has been strongly criticised by the Irish government, who claim that it will break Theresa May's pledge of "physical infrastructure and associated checks" at the border once Brexit has occurred.
In her Mansion House speech on March 2, May said it was time to face the "hard facts" of Brexit.
"We want a fund manager based in Milan to easily offer funds in Riga without compromising investor protection", Dombrovskis said.
"I could not agree more".
On a visit to Dublin, EU Council President Donald Tusk, who coordinates policy between the 27 EU nations that Britain is negotiating with, said it's up to May's government to propose a "specific and realistic solution" to avoid a hard border and that without a solution it is "very difficult to imagine substantive progress".
For no trade border you need tariff-free trade and full alignment in rules and regulations, at least insofar as they apply to goods, including animals and food.
Other MEPs used the plenary session to put forward their stance on the UK's departure from the EU.
The recent suggestion by British prime minister Theresa May for a deal akin to that between the United States and Canada suggest something a little more intrusive than a few cameras reading vehicle licence plates. The UK will look to match European Union regulatory standards (and possibly adopt identical rules) to ensure that trade in most goods remains as free as possible.
Ireland's border woes are no reason to halt Brexit, but a sign that Britain's politicians took the problem a little more seriously would be welcome.