Yesterday, Britain's parliament approved the Brexit bill, giving Prime Minister Theresa May the power to begin the proceedings to the leave the European Union.
The House of Commons approved the bill several weeks ago, but the House of Lords sought to amend it, inserting a promise that EU citizens living in the UK will be allowed to remain after Britain pulls out of the bloc.
They also added a demand that Parliament get a "meaningful" vote on the final deal between Britain and the remaining 27 EU nations, according to The Associated Press.
Both amendments were rejected Monday by the House of Commons, where May's Conservatives have a majority. The bill returned to the House of Lords, which backed down and approved it without amendments.
Once the bill receives royal assent — a formality that should be accomplished within hours — May will be free to invoke Article 50 of the EU's key treaty, triggering two years of exit negotiations, by her deadline of March 31.
May could theoretically invoke Article 50 as early as today, but sources in Downing Street told the The Standrart News Agency the move will not happen this week, adding that the Prime Minister is expected to wait until the end of the month to officially notify the EU of the UK's intention to leave.
Meanwhile it has become clear that Theresa May has ruled out Nicola Sturgeon's plans for a new Scottish independence referendum before Brexit, but postponed triggering Article 50 after the First Minister's demands caught her by surprise.
In a day of high drama, Ms Sturgeon appeared to wrong-foot No 10 when she announced she would set the wheels in motion for a second referendum next week, and insisted the ballot should take place between autumn 2018 and spring 2019 – while the Brexit negotiations are still going on.
The Prime Minister issued a stern rebuke, telling her "politics is not a game", and accusing her of "tunnel vision".
Sources close to Mrs May said she would not allow a referendum until several months after Britain's EU exit.