Michelle O’Neill pledged "a genuine honest effort" to work with unionist colleagues.
The U.K. is navigating the effects of Brexit and other historic changes that could define its role on the world stage for years to come.
British Prime Minister Rishi Sunak said the new deal, dubbed the Windsor Framework, marks a “new chapter” in the U.K.-EU relationship.
Donald Trump has previously hailed the U.K.'s departure from the European Union as a "great thing" for Britain and for business.
Prime Minister Boris Johnson, whose support for Brexit helped push the country out of the EU, said it was “an amazing moment for this country.”
The monarch's formal approval of the bill marks the last step of Britain's yearslong process to secure a trade deal with the European Union.
The U.K. and the EU avoided the catastrophic trade disruptions and job losses that "no deal" almost certainly would have caused.
Hundreds of thousands of jobs hang in the balance as the European Union and the U.K. seek to agree on a last-ditch post-Brexit trade deal.
The relationship between the prime minister and Dominic Cummings has been forged in victory after improbable victory, but now Johnson is facing an open revolt from his party.
Community leaders fear impact of coronavirus and Brexit will make Britain a less attractive prospect for skilled workers.