By Echo Wang, Lananh Nguyen and Marwa Rashad DAVOS, Switzerland (Reuters) -U.S. President Donald Trump told business leaders gathered at the World Economic Forum in Davos, Switzerland, on Thursday that he is working to reverse inflation and illegal immigration while boosting fossil fuels production in the United States.

U.S. President Trump is to speak to an international audience for the first time after returning into the White House with a speech and Q&A by video conference to the World Economic Forum's annual event in Davos on Thursday.

Officials and business executives at the annual gathering in Switzerland said the fight against global climate change would continue with or without the United States.