But Tuesday is a genuine moment of truth on whether she has done enough to secure the votes she needs.
He was responding to Channel 4 News presenter Jon Snow, who had tweeted: "A Lawyer contact tells me that the legal world is aware that the Attorney General said NO last night to the validity of Mrs May's "new European Union deal"...he been told to go away and find a way to say YES: A cohort of lawyers has been summoned". "The documents published by the European Union and United Kingdom last night are complementary to the Withdrawal Agreement & Political Declaration & provide an additional layer of interpretation, clarification and elaboration to the United Kingdom", the Irish Taoiseach said on Twitter. With 10 MPs in the parliament, it ensures the survival of the May government, and it might rally behind the prime minister now.
So, in short, the deal will probably be rejected on Tuesday-though never say never, particularly due to the complexity of the alternatives.
Mrs May later headed to the Commons to address Tory MPs behind closed doors.
But he warned that the question of whether a satisfactory agreement on a future UK/EU relationship can be reached remains "a political judgment".
Cox said he was "strongly of the view" that MPs should back the deal.
A number of MPs from the benches opposite were overheard shouting out the word "mess" at Mr Cox's slip up. May set off to Strasbourg to nail down the detail of an agreement that her officials had been working on in strict secrecy.
Former Attorney General Dominic Grieve said he had received legal advice overnight that the concessions announced by May late Monday don't "change anything". "The Government's strategy is now in tatters".
And senior Conservative Leaver John Whittingdale told the Commons Brexit Committee that the Attorney General's advice was "pretty terminal" for Mrs May's plan.
Statistics for the Australian Grand Prix
But there are reasons for optimism with an F1 favorite returning to racing action alongside his rookie F2 champion teammate. There have been 13 Australian F1 drivers since 1950 and two world champions - Jack Brabham and Alan Jones.
Verizon to launch mobile 5G in Chicago and Minneapolis on April 11
Sprint (s) has said it will offer 5G starting in May in Chicago, Atlanta, Dallas, and Kansas City but hasn't disclosed pricing. Mark your calendars for April 11, because that's when Verizon switches on its "real" 5G network in two USA cities.
Former Ohio State coach Meyer joining Fox's studio team
No matter what he's thinking, you know his name will be mentioned as a possibility for any major opening all season long. While ESPN's "College GameDay" has thrived on campuses, FOX's show initially will air from its Los Angeles studio.
The DUP said it would carefully analyse the Brexit deal add-ons on whether it would now back the withdrawal agreement.
The agreement was resoundingly voted down in January on the issue of the "backstop" is meant to avoid a hard border between Ireland (EU state) and Northern Ireland (part of UK), but many see it as an EU ploy to keep in the United Kingdom within the customs union and the single market.
Cox gave his legal opinion on the new wording struck between May and Juncker - which could be crucial in determining how Brexiteers vote later Tuesday.
"There was a clear concern in [British] parliament over one issue in particular: the Northern Ireland backstop", May said at a joint news conference with European Commission President Jean-Claude Juncker following a meeting in the French city of Strasbourg.
She had hoped that revisions to a Brexit deal over the Irish backstop, or protocol, secured late last night would offer enough assurances to get her deal through parliament.
The Independent Group - the recently-formed contingent of 11 former Labour and Tory MPs - has tabled an amendment to the motion to be debated, calling for an extension to Article 50 so Parliament can agree the terms of a so-called People's Vote.
MPs will vote whether to leave without a deal. "There will be no further interpretations of the interpretations, no further assurances of the reassurances if the "meaningful vote" tomorrow fails".
"It is not - these doubts and fears can be put to bed".
Mr Derrick said if the prime minister's deal was defeated by only a narrow margin in Tuesday's vote "that might encourage optimism" that a tweaked deal could be agreed before the end of the month.
If her plan gets approved, Britain will be on course to exit the European bloc on March 29.