Trade barriers

FILE - In this Feb. 15, 2019, file photo, Chinese Vice Premier Liu He, right, talks with U.S. Trade Representative Robert Lighthizer, while they line up for a group photo at the Diaoyutai State Guesthouse in Beijing. China's economy czar is going to Washington for talks Thursday and Friday aimed at ending a tariff war over Beijing's technology ambitions.(AP Photo/Mark Schiefelbein, File)

FILE - In this Feb. 15, 2019, file photo, Chinese Vice Premier Liu He, right, talks with U.S. Trade Representative Robert Lighthizer, while they line up for a group photo at the Diaoyutai State Guesthouse in Beijing. China's economy czar is going to Washington for talks Thursday and Friday aimed at ending a tariff war over Beijing's technology ambitions.(AP Photo/Mark Schiefelbein, File)

FILE - In this March 8, 2018 file photo photo Volkswagen cars are pictured during a final quality control at the Volkswagen plant in Wolfsburg, Germany. Germany's economic growth has stagnated in the last three months of the year. (AP Photo/Michael Sohn, file)

U.S. Treasury Secretary Steven Mnuchin, left, and U.S. Trade Representative Robert Lighthizer walk together as they leave their hotel in Beijing, Friday, Feb. 15, 2019. U.S. and Chinese negotiators opened talks Thursday on a sprawling trade dispute as Beijing reported its January exports rebounded despite President Donald Trump's tariff hikes. (AP Photo/Mark Schiefelbein)

In this Thursday, Feb. 14, 2019, photo, Transformer's character mascots entertain shoppers at a shopping mall in Handan in north China's Hebei province. U.S. and Chinese envoys are holding a second day of trade talks after the top economic adviser to President Donald Trump said he has yet to decide whether to go ahead with a March 2 tariff increase on imports from China. (Chinatopix via AP)

People walk past an electronic board showing Hong Kong share index outside a bank in Hong Kong, Thursday, Feb. 14, 2019. Asian stocks were mostly lower on Thursday as China and the U.S. kicked off two days of trade negotiations in Beijing. (AP Photo/Kin Cheung)

FILE- In this May 21, 2018, file photo, container ships are unloaded at the Port of Oakland in Oakland, Calif. China’s exports rebounded in January from a contraction late last year amid trade tensions with Washington, but imports declined. Global exports rose 9.1 percent over a year earlier while imports contracted 1.5 percent. (AP Photo/Ben Margot, File)

U.S. Treasury Secretary Steven Mnuchin, left, gestures to journalists as he leaves a hotel to attend a new round of high-level trade talks with Chinese officials in Beijing, Thursday, Feb. 14, 2019. (AP Photo/Andy Wong)

A cleaner wipes window panels near a shop of American sportswear brand Champion, at the capital city's popular shopping mall in Beijing, Wednesday, Feb. 13, 2019. U.S. and Chinese negotiators are meeting this week for their final trade talks before U.S. President Donald Trump decides whether to escalate a dispute over technology with a March 2 tariff hike on $200 billion of imports from China. (AP Photo/Andy Wong)