The European Union Withdrawal Bill, a complex piece of legislation meant to disentangle Britain from four decades of EU rules and regulations, has had a rocky ride through Parliament.
He proposed an alternate agreement that would give ministers seven days to come up with new terms if Parliament chose to veto the final Brexit deal, and give the government until November 30 to reach a new deal. We had a personal assurance that we would find a way to address the concerns in the House of Lords when the Bill goes back there.
The government averted a rebellion on Tuesday over whether Parliament should have a decisive say in such a scenario.
The "meaningful vote" will be the first major test after the House of Lords introduced changes to the bill, trying to reshape the government's approach to Brexit by encouraging lawmakers to press for the closest possible ties.
In an earlier vote, MPs voted by 328 votes to 297 to disagree with another Lords amendment which was linked to changes to the day Britain leaves the EU.
A series of further votes on the European Union withdrawal bill will take place on Wednesday, but no defeats are expected after ministers agreed a compromise wording over post-Brexit plans for a "customs arrangement".
Hours before the debate began, a justice minister resigned in protest at what he called its "wish to limit" the role of parliament in shaping Brexit. After losing her party's majority in parliament at an ill-judged election a year ago, she now relies on the support of a small Northern Irish party and the distance between victory and defeat is narrow.
"A meaningful vote is not the ability to reverse the decision of the referendum", Brexit Secretary David Davis told BBC radio.
Those developments are likely to lower expectations of a Bank of England interest rate rise in August, given the central bank has said it wants to see more wage pressures before it increases borrowing costs.
Mr Grieve withdrew his own amendment, which would have given MPs powers to dictate what the Government should do if no acceptable agreement is reached by February 2019.
"I trust the prime minister".
Solicitor General Robert Buckland said the government remained "open-minded", but this may or may not result in it coming forward with new proposals in the coming days.
The key Brexit bill is back in the Commons today and tomorrow for a series of knife-edge votes that will determine the future of the Brexit process.
Davis said giving Parliament power to direct the government's hand in talks would be "an unconstitutional shift which risks undermining our negotiations with the European Union".
He rejected suggestions ministers were already backtracking on promises made to MPs, insisting he did not want to raise any "false expectations".
And in a final vote, MPs voted by 326 votes to 301 to disagree with Lords amendment 52 linked to what European Union laws the United Kingdom will keep after Brexit.
In a day of drama, May's position seemed suddenly weaker when junior justice minister Phillip Lee, who has always been critical of Brexit strategy, resigned and said he would vote against the government.
A statement from the Brexit ministry said the government had agreed to "look for a compromise".