Why critics believe Trump's big win in Supreme Court is 'terrifying step towards authoritarianism'

As the president himself said, this was a "giant" of a decision - a significant moment to end a week of whiplash-inducing news.

The decision by the US Supreme Court is a big win for President Donald Trump.

By a majority of 6-3, the highest court in the land has ruled that federal judges have been overreaching in their authority by blocking or freezing the executive orders issued by the president.

Over the last few months, a series of presidential actions by Trump have been blocked by injunctions issued by federal district judges.

The federal judges, branded "radical leftist lunatics" by the president, have ruled on numerous individual cases, most involving immigration.

They have then applied their rulings as nationwide injunctions - thus blocking the Trump administration's policies.

"It was a grave threat to democracy frankly," the president said at a hastily arranged news conference in the White House briefing room.

"Instead of merely ruling on the immediate case before them, these judges have attempted to dictate the law for the entire nation," he said.

In simple terms, this ruling - from a Supreme Court weighted towards conservative judges - frees up the president to push on with his agenda, less opposed by the courts.

"This is such a big day," the president said.

"It gives power back to people that should have it, including Congress, including the presidency, and it only takes bad power away from judges. It takes bad power, sick power and unfair power.

"And it's really going to be... a very monumental decision."

The country's most senior member of the Democratic Party was to the point with his reaction to the ruling.

Senate minority leader Chuck Schumer called it "an unprecedented and terrifying step toward authoritarianism, a grave danger to our democracy, and a predictable move from this extremist MAGA court".

In a statement, Schumer wrote: "By weakening the power of district courts to check the presidency, the court is not defending the constitution - it's defacing it.

"This ruling hands Donald Trump yet another green light in his crusade to unravel the foundations of American democracy."

Federal power in the US is, constitutionally, split equally between the three branches of government - the executive branch (the presidency), the legislative branch (Congress) and the judiciary (the Supreme Court and other federal courts).

They are designed to ensure a separation of power and to ensure that no single branch becomes too powerful.

This ruling was prompted by a case brought over an executive order issued by President Trump on his inauguration day to end birthright citizenship - that constitutional right to be an American citizen if born here.

A federal judge froze the decision, ruling it to be in defiance of the 14th amendment of the constitution.

The Supreme Court has deferred its judgment on this particular case, instead ruling more broadly on the powers of the federal judges.

The court was divided along ideological lines, with conservatives in the majority and liberals in dissent.

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In her dissent, liberal Justice Ketanji Brown Jackson wrote: "​​As I understand the concern, in this clash over the respective powers of two coordinate branches of government, the majority sees a power grab - but not by a presumably lawless executive choosing to act in a manner that flouts the plain text of the constitution.

"Instead, to the majority, the power-hungry actors are... (wait for it)... the district courts."

Another liberal Justice, Sonia Sotomayor, described the majority ruling by her fellow justices as: "Nothing less than an open invitation for the government to bypass the constitution."

Conservative Justice Amy Coney Barrett, who Trump appointed during his first term, shifting the balance of left-right power in the court, led this particular ruling.

Writing for the majority, she said: "When a court concludes that the executive branch has acted unlawfully, the answer is not for the court to exceed its power, too."

The focus now for those who deplore this decision will be to apply 'class action' - to file lawsuits on behalf of a large group of people rather than applying a single case to the whole nation.

There is no question though that the president and his team will feel significantly emboldened to push through their policy agenda with fewer blocks and barriers.

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The ruling ends a giddy week for the president.

Last Saturday he ordered the US military to bomb Iran's nuclear sites. Within two days he had forced both Israel and Iran to a ceasefire.

By mid-week he was in The Hague for the NATO summit where the alliance members had agreed to his defence spending demands.

At an Oval Office event late on Friday, where he presided over the signing of a peace agreement between the Democratic Republic of Congo and Rwanda, he also hinted at a possible ceasefire "within a week" in Gaza.

A truly consequential week seems set to be followed by another.

(c) Sky News 2025: Why critics believe Trump's big win in Supreme Court is 'terrifying step towards authoritarianism'