Deputy Prime Minister and Nationals Leader Barnaby Joyce has tested positive for COVID-19 after arriving in the United States. Mr. Joyce told ABC Radio England he had been experiencing mild symptoms and chose to get tested. "Look obviously (I am) very frustrated I'm going to be locked up in a room by myself for 10 days, but that's part of the process," he said. "It's probably developing, I'm probably very much in the early stages--but I'm more worried about being in a room by myself to be honest." Mr. Joyce is fully vaccinated against COVID-19...