The government is gearing up for what could be its first defeat on the Brexit bill. Theresa May needs the bill approved by the House of Lords before triggering Article 50 and beginning Britain's exit from the EU.
The issue is that the House of Lords may request a unilateral guarantee about EU nationals' right to stay in the UK.
This puts the Prime Minister under pressure to stick to the Brexit timetable as it could mean a delay of up to a week, preventing her from triggering Article 50 before the end of this month and prolonging uncertainty for law firms and other businesses alike.
Peers are debating calls for the UK to protect the rights of EU citizens to remain in the UK after Brexit amid signs the government could be defeated. Peers are expected to agree to amend the draft legislation to protect the rights of EU citizens living in the UK. Should the amendment be passed, it would be the government's first defeat on the bill - which will give Theresa May the authority to trigger Article 50 and begin official talks on the terms of the UK's exit from the EU. Home Secretary Amber Rudd had sought to reassure members that EU nationals' status would be a priority once Brexit talks begin.