A staff member of Huawei uses her mobile phone at the Huawei Digital Transformation Showcase in Shenzhen, China's Guangdong province on March 6, 2019. - Chinese telecom giant Huawei insisted on March 6 its products feature no security "backdoors" for the government, as the normally secretive company gave foreign media a peek inside its state-of-the-art facilities. (Photo by WANG ZHAO / AFP)        (Photo credit should read WANG ZHAO/AFP/Getty Images)
What blacklisting Huawei means for the US-China trade war
The White House blacklisted China's biggest tech company, Huawei, opening a new front in the US-China trade war. CNN's Christine Romans explains.
01:29 - Source: CNN
Tariffs and trade 14 videos
A staff member of Huawei uses her mobile phone at the Huawei Digital Transformation Showcase in Shenzhen, China's Guangdong province on March 6, 2019. - Chinese telecom giant Huawei insisted on March 6 its products feature no security "backdoors" for the government, as the normally secretive company gave foreign media a peek inside its state-of-the-art facilities. (Photo by WANG ZHAO / AFP)        (Photo credit should read WANG ZHAO/AFP/Getty Images)
What blacklisting Huawei means for the US-China trade war
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President Donald Trump shakes hands with Chinese Vice Premier Liu He, after signing a trade agreement in the East Room of the White House, Wednesday, Jan. 15, 2020, in Washington. (AP Photo/Evan Vucci)
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NEW YORK, NEW YORK - NOVEMBER 12: President Donald Trump delivers a speech at the Economic Club Of New York in the Grand Ballroom of the Midtown Hilton Hotel on November 12, 2019 in New York City. (Photo by Steven Ferdman/WireImage)
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