Trump has denied wrongdoing and accused Democrats on Tuesday of pursuing an "illegal, partisan attempted coup" and declaring "open war" on American democracy.
Tu Xinquan, director of the China Institute for WTO Studies at the University of International Business and Economics, said the authorities and industry associations should play a bigger role in helping businesses go global.
Trump said fellow Republican Brian Kemp of Georgia had "gone too far" by allowing barbershops, nail salons, tattoo parlors, beauty salons, spas and other businesses to open later this week.
Troops have to climb steep mountain slopes wearing protective gear.
Trump last week threatened to seal the border this week if Mexico did not immediately halt all illegal immigration into the US, a move would have enormous economic consequences on both sides of the border.
Trump has faced a new controversy after The Atlantic magazine, citing four unnamed people, reported last week that he had referred to Marines buried in an American cemetery near Paris as "losers" and "suckers" and declined to visit their graves during a 2018 trip to France. Trump has vehemently denied the report.
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Trump also took aim at the nuclear deal reached between Iran and world powers of Britain, China, France, Russia and the United States plus Germany in July 2015, under which Iran agreed to limit its uranium-enrichment activities in return for the lifting of Western and international sanctions.
Trudeau said he appreciates China's stance on climate change and the role that the world's second-largest economy has played. Canada will increase exchanges with China in this area, he said.
Trump and his wife, Melania, are scheduled to arrive in Tokyo on Saturday afternoon and the US president and first lady will stay at the Palace Hotel Tokyo, near the Imperial Palace in Tokyo's Chiyoda Ward.
Trump also went off track by saying that the US is the only country that automatically gives citizenship to anyone born in the country.