Trump applauded the achievements China has made regarding economic development and said he expects a successful state visit.
Trump, speaking at the White House before signing the executive order, stressed that he "strongly" opposes efforts to defund or dismantle police departments, calling the ideas "radical."
Trump is under increasing pressure from US business groups and some members of the US Congress, who say excluding Canada from NAFTA would play havoc with the three member nations' increasingly integrated economies.
Trump lashed out before the hearings and during them, saying on Twitter that "Democrats and others" are trying to fabricate a crime and pin it on "a very innocent President''.
Trump was scheduled to deliver his third State of the Union address to a joint session of Congress on Tuesday. The vote by the Senate on whether to remove him from office is expected on Wednesday afternoon.
Trump seemed open to the idea at the annual lighthearted Gridiron Dinner over the weekend.
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Tsujii began taking piano lessons at age 4 and soon after was being heralded as a child genius. He released his first CD in 2007 and entered the spotlight in June 2009 when he became the first Japanese to win the Van Cliburn International Piano Competition. He has since enjoyed exceptional popularity for a classical music artist, with his latest recital tour, which ended this week, selling out long ago.
Tsang Yee, a Hong Kong entrepreneur in Shenzhen who attended the symposium, said the Bay Area provides a great platform for Hong Kong young people to develop their careers.
Trump, who has described his conduct as "perfect", said on Friday he would formally object to Congress's impeachment inquiry, even as he acknowledged that Democrats "have the votes" to proceed. Still, he predicted such a move would hurt them politically.
Trump had demanded that legislation to fund the government contain .7 billion for his long-promised wall along the US-Mexico border, which he says is necessary to stop illegal immigration, human trafficking, and drug smuggling.