Closed counters at the United States Border Services port are seen from the Canadian side of the Rainbow Bridge in Niagara Falls, Ontario, Canada, on May 19, 2020. Canadian Prime Minister Justin Trudeau announced Tuesday that Canada and the United States have agreed once again to keep the cross-border closed to all non-essential travel for another month amid the ongoing COVID-19 pandemic. As of Tuesday afternoon, there were 79,070 confirmed COVID-19 cases in Canada with over 5,900 deaths, while the United States has more than 1.5 million COVID-19 cases and more than 90,000 people have died of the disease. (Photo by Zou Zheng/Xinhua)

A deserted road toward the U.S. port is seen from the Canadian side of the Rainbow Bridge in Niagara Falls, Ontario, Canada, on May 19, 2020. Canadian Prime Minister Justin Trudeau announced Tuesday that Canada and the United States have agreed once again to keep the cross-border closed to all non-essential travel for another month amid the ongoing COVID-19 pandemic. As of Tuesday afternoon, there were 79,070 confirmed COVID-19 cases in Canada with over 5,900 deaths, while the United States has more than 1.5 million COVID-19 cases and more than 90,000 people have died of the disease. (Photo by Zou Zheng/Xinhua)

Canadian and the U.S. national flags are seen from the Canadian side of the Rainbow Bridge in Niagara Falls, Ontario, Canada, on May 19, 2020. Canadian Prime Minister Justin Trudeau announced Tuesday that Canada and the United States have agreed once again to keep the cross-border closed to all non-essential travel for another month amid the ongoing COVID-19 pandemic. As of Tuesday afternoon, there were 79,070 confirmed COVID-19 cases in Canada with over 5,900 deaths, while the United States has more than 1.5 million COVID-19 cases and more than 90,000 people have died of the disease. (Photo by Zou Zheng/Xinhua)

Closed counters at the United States Border Services port are seen from the Canadian side of the Rainbow Bridge in Niagara Falls, Ontario, Canada, on May 19, 2020. Canadian Prime Minister Justin Trudeau announced Tuesday that Canada and the United States have agreed once again to keep the cross-border closed to all non-essential travel for another month amid the ongoing COVID-19 pandemic. As of Tuesday afternoon, there were 79,070 confirmed COVID-19 cases in Canada with over 5,900 deaths, while the United States has more than 1.5 million COVID-19 cases and more than 90,000 people have died of the disease. (Photo by Zou Zheng/Xinhua)