International trade

France's President Emmanuel Macron greets bystanders during at the Playa de Mayo square in Buenos Aires, Argentina, Thursday, Nov. 29, 2018. Macron will attend the two-day G20 summit starting Friday. (AP Photo/Sebastian Pani)

In this Nov. 22, 2018, photo, Mexican President-elect Andres Manuel Lopez Obrador listens during a meeting in Mexico City. Migrants, trade, crime, the border wall: The challenges to the modern U.S.-Mexico relationship have perhaps never been as stark and divisive as they are now, at a critical juncture for both countries. (AP Photo/Rebecca Blackwell, File)

Anti-Brexit supporters talk as they protest opposite the House of Parliament in London, Tuesday, Nov. 27, 2018. The European Union's highest court on Tuesday began considering whether Britain could unilaterally revoke its decision to leave the EU before the planned exit date of March 29. (AP Photo/Frank Augstein)

FILE- In this Jan. 30, 2018, file photo a rubber tire gantry moves into position to transfer shipping containers at the Georgia Ports Authority's Port of Savannah in Savannah, Ga. On Wednesday, Nov. 28, the Commerce Department issues the final estimate of how the U.S. economy performed in the July-September quarter. (AP Photo/Stephen B. Morton, File)

Britain's Chancellor Philip Hammond walks past 10 Downing Street in London, Thursday, Nov. 22, 2018. (AP Photo/Kirsty Wigglesworth)

Russian President Vladimir Putin speaks during a meeting in Moscow's Kremlin, Russia, Tuesday, Nov. 27, 2018. Putin and German Chancellor Angela Merkel spoke on the phone in the early hours on Tuesday, and the Russian president expressed a "serious concern" about what the martial law in Ukraine might entail. The Kremlin warned Tuesday that Ukraine’s declaration of martial law over Russia’s seizure of three Ukrainian ships might trigger a flare-up in hostilities in eastern Ukraine, while Kiev blamed Russia for parading captured Ukrainian seamen on television. (Alexei Nikolsky, Sputnik, Kremlin Pool Photo via AP)

Chinese President Xi Jinping, left, and Spain's King Felipe walk side by side during a welcome ceremony at the Royal Palace in Madrid, Spain, Wednesday, Nov. 28, 2018. Chinese president Xi Jinping has arrived Tuesday in Spain for the first leg of an international tour that will cover a global summit in Argentina and visits to Panama and Portugal. (AP Photo/Manu Fernandez)

People walk past a bank electronic board showing the Hong Kong share index at Hong Kong Stock Exchange Wednesday, Nov 28, 2018. Asian shares were mixed Wednesday after a wobbly day of trading on Wall Street, and uncertainty loomed as investors looked toward the G-20 meeting of world leaders later in the week.(AP Photo/Vincent Yu)

FILE - In this Sept. 26, 2018, file photo, a staff member uses a laptop computer at a display for 5G wireless technology from Chinese technology firm Huawei at the PT Expo in Beijing. New Zealand's international spy agency has banned mobile company Spark from using Huawei equipment in its planned 5G upgrade, saying it posed a "significant network security risk." (AP Photo/Mark Schiefelbein, File)