(Image source from: NDTV.com)

President Donald Trump has got into a surpassing row with the chief justice of the Supreme Court, asserting "shocking" bias in opposition to his policies in parts of the judiciary.

Trump on Wednesday singled out the Court of Appeals for the Ninth Circuit, whose jurisdiction comprises left-leaning California, tweeting that its rulings "are making our country unsafe! Very dangerous and unwise!"

Earlier, the Chief Justice John Roberts, who rarely makes political statements, rebuked criticism of the courts by Trump, insisting that the judiciary is "independent."

Responding to complaints by Trump that judges appointed by Democratic presidents act against the current White House, Roberts told the Associated Press: "We do not have Obama judges or Trump judges, Bush judges or Clinton judges."

"What we have is an extraordinary group of dedicated judges doing their level best to do equal right to those appearing before them," Roberts said. "That independent judiciary is something we should all be thankful for," the chief justice added in a brief statement.

Trump, who is on holiday in Florida, fired back on Twitter.

"Sorry Chief Justice John Roberts, but you do indeed have 'Obama judges,' and they have a much different point of view than the people who are charged with the safety of our country," he wrote.

He said that "a vast number" of cases concerning his controversial priorities, like a harsh crackdown on illegal immigration, had been overturned. "Please study the numbers, they are shocking," Trump wrote.

The row came a day after Trump criticized a federal judge who temporarily obstructed the administration from its decision to deny the right to political asylum applications for people who get into the country illegally.

Related content: U.S. Judge Bars Trump Order Denying Asylum to Illegal Border Crossers

The United States District Judge Jon Tigar in San Francisco issued a temporary restraining order against the Trump move, which comes as a large group of Central American migrants, frequently described by Trump as dangerous, is heading on foot for the U.S. southern border.

On Tuesday, Trump lashed out at the judge's ruling, calling it a "disgrace." "This was an Obama judge, and I'll tell you what, this is not going to happen anymore," Trump said.

"People should not be allowed to immediately run to this very friendly circuit and file their case." "We will win that case in the Supreme Court of the United States," Trump said.

Trump has repeatedly attacked the judiciary when cases have gone against him in the past but this was the first time that Roberts, a conservative jurist who was appointed to the nation's highest court by Republican president George W Bush, has responded publicly.

During the 2016 presidential election campaign, Trump attacked the Mexican-American heritage of a judge who ruled against him in a case involving Trump University.

The U.S. federal government comprises three branches - the legislative comprising the House of Representatives and Senate the executive headed by the president, and the judicial made up of the courts. The judiciary, particularly the Supreme Court, is meant to be above the political fray.

Critics of the Trump immigration crackdown say that by restricting asylum seekers to border crossing points the government is effectively closing the door on people who may genuinely be fleeing for their lives.

Trump's administration has argued that he has the executive power to curb immigration in the name of national security - a power he raised after taking office earlier this year with an arguably ban on travelers from several for the most part Muslim countries.

The concluding version of the order was upheld by the Supreme Court on June 26 after a drawn-out legal battle.

-Sowmya Sangam