The US Supreme Court delivered a contradictory verdict today that simultaneously weakens Donald Trump’s personal grip on certain legal proceedings yet vastly expands the powers of the presidency. British constitutional experts are urgently analysing the implications for the United Kingdom’s unwritten constitution and the principle of executive accountability.
At the heart of the ruling is a split decision: the Court rejected Trump’s blanket claim of absolute immunity from criminal prosecution for actions taken while in office, a blow that exposes him to potential charges related to January 6th. Yet, in the same breath, the Court established a new, broad presumption of immunity for ‘official acts’, granting future presidents a shield that many fear could embolden authoritarian tendencies.
Professor Sir David Maxwell, a constitutional scholar at King’s College London, described the ruling as a “constitutional earthquake with aftershocks across the Atlantic”. He warned: “The Court has created a two-tier system of justice: one for the president and another for everyone else. For Britain, where our monarchy and parliamentary sovereignty rely on the concept that no one is above the law, this is deeply unsettling.”
The judgment has also sparked fears about the erosion of checks and balances. In the UK, the principle of ministerial responsibility holds cabinet members to account, but the US ruling could inspire British politicians to argue for greater executive discretion. Labour MP Harriet Harman, former chair of the Joint Committee on Human Rights, said: “We must guard against any creeping presidentialism in our own system. The idea that a leader can escape scrutiny for ‘official acts’ is a direct assault on democratic accountability.”
The reaction from Westminster has been swift. The Foreign Office has declined to comment on a US domestic legal matter, but backbench MPs from all parties have voiced concern. Conservative MP Sir Bob Neill, chair of the Justice Committee, said: “While we respect the sovereignty of the US courts, this decision has significant ramifications for the rule of law globally. The UK should reaffirm that our system offers no comparable immunity.”
For ordinary people, the ruling may seem distant, but its consequences could hit the kitchen table. A weakened Trump might spur political instability, affecting global markets and trade deals. Meanwhile, a strengthened presidency could embolden unilateral US actions on tariffs, immigration and climate policy. Jane Morrison, a 54-year-old shop worker from Manchester, said: “It all feels like a game to them. But when these big shots get more power, it’s us who pay the price at the till.”
The Trades Union Congress has also weighed in, warning that the ruling could set a dangerous precedent for workers’ rights if future presidents claim immunity from labour laws. General Secretary Paul Nowak said: “We’ve seen how US corporate power erodes rights here. This ruling hands the boss in the White House even more power to ignore the rules everyone else must follow.”
As the news sinks in, British constitutional experts are calling for a review of the UK’s own executive powers. The fear is that without a written constitution, the country is vulnerable to similar power grabs. For now, the message from these shores is clear: the American system has lurched towards a dangerous model of executive supremacy, and Britain must take heed.
