Vice President Mike Pence headlined the third night of a virtual Republican National Convention with a patriotic call for the re-election of President Donald Trump who he says has set the United States on "a path of freedom and opportunity".

Backed by the red-white-and-blue symbolism of the American flag, Pence spoke at Fort McHenry which withstood a naval bombardment by the British Navy in 1814 and inspired the words of the US national anthem, "O say does that star-spangled banner yet wave..."

"If you look through the fog of these challenging times you will see our flag is still there," Pence told a Republican audience in remarks on the coronavirus pandemic and civil unrest sweeping the country.

For the first time in the Republican convention, which concludes on Thursday with President Trump's acceptance speech, Pence offered the core argument Trump and his Republican Party are making for his re-election - that the US economy was soaring before the pandemic and Trump is succeeding in controlling the outbreak and getting the economy moving again.

"The coronavirus struck from China," Pence said, repeating a line Trump uses to cast blame for the outbreak on China because the novel coronavirus was first discovered in the central city of Wuhan.

"The president took unprecedented action and suspended all travel from China," Pence said, exaggerating the president's action.

Trump's travel restrictions to China, announced on January 31, were only partial and did not apply to Americans going back and forth.

Pence touted the White House's partnership with private industry to reinvent testing and produce supplies across the country including producing 100,000 ventilators in 100 days.


The US now conducts thousands of tests a day and has delivered "billions of pieces of personal protective equipment", Pence said, although hospitals and public health officials continue to report constraints in testing and shortages of equipment.

The administration built field hospitals and mobilised military medical personnel and signed an economic rescue package that saved 50 million jobs, he claimed.

"We are on track to have the world's first, safe and effective coronavirus vaccine by the end of this year," Pence said, praising the heroism of American healthcare workers and emergency responders.

"Thanks to the courage and compassion of the American people, we are slowing the spread, we're protecting the vulnerable, and we're saving lives, and we're opening up America."

Pence was the first speaker at the largely virtual Republican convention to directly address the coronavirus pandemic that has killed more than 180,000 people in the US - devastated much of the economy - and put more than 30 million people out of work. First Lady Melania Trump on Tuesday expressed her sympathy for the families of those who have died.

Pence took note of Hurricane Laura's landfall on the Gulf Coast of Louisiana and Texas and said the Federal Emergency Management Agency (FEMA) was prepared to assist people displaced by the Category 4 storm that was packing a catastrophic seawater surge of four to six metres (15-20 feet).

Pence condemned "the violence and chaos engulfing cities across this country".

"The violence must stop whether in Minneapolis, Portland, or Kenosha too," he said.

The convention has been overshadowed by civil unrest and riots in Kenosha, Wisconsin, where two people protesting against the police shooting of a Black man were allegedly killed by a white teenager who sympathised with police. Trump has sided with police over protesters since the unrest began in May.


Police arrested 17-year-old Kyle Rittenhouse from nearby Antioch, Illinois and charged him with homicide on Wednesday. A Kenosha County sheriff said Rittenhouse may have been part of a vigilante group that intended to protect property from protesters.

Several African American speakers voiced Trump's appeal to Black voters and cited Trump's support for federal funding for historically Black colleges, tax advantages for urban opportunity zones, and bipartisan criminal justice reform legislation passed by Congress.

"Donald Trump is offering real and lasting change and unprecedented opportunity to rise, a country that embraces the spirit of the civil rights movement of the Sixties, a place where people are judged by the content of their talents and abilities, not by the colour of their skin," said Clarence Henderson, a civil rights activist who participated in a lunch-counter sit-in in 1960.