Leading Democrats have condemned President Donald Trump’s decision to commute the prison sentence of his former adviser and friend Roger Stone.

Joe Biden’s spokesman accused President Trump of abuse of power and “laying waste” to US values.

The move – sparing Roger Stone from jail but not a pardon – came just after a court denied Stone’s request to delay the start date of his 40-month prison term.

Roger Stone, 67, was convicted of lying to Congress, obstruction and witness tampering.

He was the sixth Trump aide found guilty on charges linked to a justice department probe that alleged Russia tried to boost the Trump 2016 campaign.

Roger Stone had been due to report to a federal prison in Jesup, Georgia, on July 14.

The White House said Roger Stone was the victim of an attempt by opponents to undermine the presidency.

President Trump has been accused by political critics of undermining the justice system by criticizing criminal cases against Roger Stone and other former aides.

The president has also publicly complained about the prosecutions of onetime campaign chairman Paul Manafort and former White House National Security Adviser Michael Flynn.

Joe Biden’s spokesman Bill Russo said President Trump could not be shamed and could only be stopped at the ballot box.

“President Trump has once again abused his power, releasing this commutation on a Friday night, hoping to yet again avoid scrutiny as he lays waste to the norms and the values that make our country a shining beacon to the rest of the world,” he said.

House of Representatives Intelligence Committee Chairman Adam Schiff condemned President Trump’s clemency.

He said: “With this commutation, Trump makes clear that there are two systems of justice in America: one for his criminal friends, and one for everyone else.”

Donald Trump Fires Campaign Adviser Roger Stone

Democratic Senator Elizabeth Warren said it showed Donald Trump was the most corrupt president in history.

However, President Trump’s personal lawyer, Rudy Giuliani, welcomed the news, saying Roger Stone’s sentence was draconian.

Roger Stone himself told reporters that under the terms of the commutation he could now appeal against his sentence, and was confident that he could expose “an enormous amount of corruption” at his trial.

The White House said in a statement: “Roger Stone is a victim of the Russia Hoax that the Left and its allies in the media perpetuated for years in an attempt to undermine the Trump Presidency.”

It said that Department of Justice prosecutors under special counsel Robert Mueller only charged Roger Stone out of frustration after failing to prove the “fantasy” that the Trump campaign had colluded with the Kremlin.

The White House also suggested that the FBI had tipped off CNN about their pre-dawn raid on Roger Stone’s house, noting that a camera crew for the cable network was on the scene to record the arrest.

President Trump had been hinting about a reprieve for Roger Stone for months, including on July 9 in an interview with a Fox News host.