"Working people need a cast-iron, legal guarantee that rights like these will be safe after Brexit, and that guarantee should be written into the deal", she said.
British lawmakers oppose the backstop because it requires Britain to apply some European Union rules in Northern Ireland indefinitely, unless another plan for keeping the border open can be agreed in future.
It comes as a senior Brexiteer pointed to MPs' growing mood for compromise.
Main image: Graham Brady, Chairman of the 1922 Committee of Tory backbenchers.
The spokesman added Britain will "continue to pursue" parliament's demand for legally binding changes to ensure "the United Kingdom won't be trapped in the backstop indefinitely".
Parliament rejected May's deal in January, largely because of concerns about the so-called backstop, which is created to prevent the need for physical border checks along the Irish border if negotiators fail to agree on a free-trade deal.
Jeremy Corbyn was on Wednesday meeting Tory and Labour MPs who support the plan for a single market and customs union relationship with the EU.
British Prime Minister Theresa May will on Monday unveil the plans for the 1.6 billion pound fund for Brexit-supporting communities in order to help to boost economic growth with ministers declining it was a Brexit bribe in order to win support for her European Union exit deal - Brexit deal.
The EU's chief negotiator Michel Barnier said on Friday that the bloc was ready to give Britain more guarantees that the backstop was only meant to be temporary and used for a "worst-case scenario".
As May seeks to win over MPs, a group of prominent Brexit rebels set out the changes they want to see to her agreement in return for their support: it must be legally binding, clear and set out an exit route. The government will also seek to ensure towns across Wales, Scotland and Northern Ireland will benefit from the new funding.
But asked whether the government would back no-deal in the vote scheduled for the following day if the agreement fails, he said: "Potentially all things are possible".
"It came as negotiations to tweak the PM" s deal to make it palatable to her own Brexiteers appeared to be faltering.
If it's rejected again, MPs will then vote on whether or not to reject a no-deal Brexit. And there are a variety of views within the ERG itself, with some leading figures taking a more hardline approach than others.
"We have been forced into this by Theresa May delaying, running down the clock", McDonnell told Sky News, saying Labour is still pushing to get its alternative Brexit plan adopted.
"If the deal goes through (Britain's Parliament), then everything is fine, although the Brits may request a short, truly technical extension to complete their own legislative process", a second European Union official said. "I don't want to overstate them because I still think there's a lot of work to do, but I think they do understand that we are being honest".
And the City boss will not tolerate tiredness as an excuse as the Premier League champions target an unprecedented quadruple. The last derby at Anfield in December is still viewed by many Everton fans as the game that ruined their season.
Democrat, House Speaker Nancy Pelosi, has tried to temper talk about impeaching Trump, noting the process is "divisive". Trump labeled the investigation into the alleged Russian collusion in the 2016 election "the collusion delusion".
Harry Kane is expected to lead Spurs' attack while Pochettino said Harry Winks and Eric Dier could feature after injuries. Hugo Lloris came to the fore, making four vital saves, in a testing spell just before the break.
Hume said Nadler would be moving straight to impeachment proceedings if he possessed evidence of obstruction of justice. If the American people are to expect any accountability in the White House, then, it must be through Congress.
We are at the mercy of these soldiers, " said Mohammed Akram, a resident in Mendhar area in Indian-controlled Kashmir. On February 28, the Foreign Office said it received a dossier on the Pulwama attack from the Indian government.
Majority Leader McConnell has just announced the Senate will vote on the resolution, and says it will pass, according to CNBC . Rand Paul is the latest GOP lawmaker to say he can't go along with the White House on the emergency declaration .
Signed by dozens of notable NY figures - including the CEOs of Mastercard , Citigroup , Deloitte, and more - promised that Gov. The company has said it's not planning to look for a substitute for NY to build its HQ2 any time soon.
New Delhi is world’s most polluted capital
Myllyvirta also attributed South Asia's high population density as another contributing factor to the region's poor air quality. The reports highlight that 64% of these cities already exceed the current standards set by the World Health Organisation (WHO).
SpaceX rocket docks at the International Space Station
The only way astronauts can get to space are via Russian rockets, yet the cost of using them has steeply risen over the years. Ripley was joined in the ship's maiden flight by Little Earth - a plush toy which looks like the Earth with arms and legs.
Trump and Kim hold second day of summit in Hanoi
The second summit between the two leaders in Hanoi , Vietnam, comes eight months after their first meeting in Singapore. North Korea has conducted no nuclear or intercontinental ballistic missile tests since late 2017.