Trump: Biden is 'puppet of left wing extremists'

US President Donald Trump is on the attack against his Democratic rival calling Joe Biden a "puppet of left wing extremists."

Trump's comments came during his second campaign stop in Minnesota.

"But the proud people of Minnesota will not let this happen. You will deliver a historic victory for our values, our citizens and our treasured way of life," said Trump at the airport in Mankato.

"We'll save our cities and our suburbs from the future of crime and chaos, corruption and economic collapse that puppet Joe Biden would unleash on America. This is a puppet. He won't do it intentionally. He just says, well, whatever they want, because he has no clue. Because he has no clue."

Fascism, though, is form of far-right nationalism.

The president also complained about his teleprompter during his speech and railed against Fox News Channel, which has favorable to Trump.

"One of the biggest differences between this year and four years ago is Fox. Fox is like from a different planet and too bad," said Trump.

"if we don't win? They're going to go down the tubes along with every other media outlet. They'll all be Bust, they'll all be gone. I can tell you that nobody is going to want to cover Sleepy Joe. We'll end up with one very boring socialist country that will go to hell."

Trump also was set to visit Wisconsin - the official host state of the entirely virtual Democratic National Convention to launch a week of travel and political events aiming to blunt the customary polling “bounce” that a candidate gets during their convention week.

The president trails in both public and private surveys less than three months before Election Day.

As Trump attacked Biden, his plans for his own convention next week were beginning to come into focus after the coronavirus scrapped plans for in-person gatherings in Charlotte and Jacksonville, Florida.

Trump is set to accept the Republican nomination next Thursday in a speech from the White House, with the Republican National Committee filing a permit application to launch fireworks from the National Mall to mark the occasion. A spokesperson said the application was still pending.