Trade barriers

This April 26, 2019, photo shows Japan's Ministry of Economy, Trade and Industry building in Tokyo. Japan is imposing further restrictions on exports to South Korea, citing a decline in "relations of international trust" between the Asian neighbors. The Ministry of Economy, Trade and Industry said a review soliciting public comments starts Monday, July 1, 2019, on the move to effectively remove South Korea from a list of so-called "white nations" that have minimum restrictions on trade. (Kyodo News via AP)

In this image made from video, EU Commissioner for Trade Cecilia Malmstrom, front left, and Vietnamese Trade Minister Tran Tuan Anh, front right, stand together as they exchange documents in Hanoi, Sunday, June 30, 2019. Vietnam and the European Union signed a free trade agreement on Sunday, opening opportunities to further boost trade between the euro bloc and one of Southeast Asia's biggest manufacturing nations. (AP Photo)

Russian President Vladimir Putin, right, and Japanese Prime Minister Shinzo Abe attend a signing ceremony prior to their news conference on the sidelines of the G-20 leaders summit in Osaka, western Japan, June 29, 2019. (Kim Kyung-Hoon/Pool Photo via AP)

President Donald Trump poses for a photo with Chinese President Xi Jinping during a meeting on the sidelines of the G-20 summit in Osaka, Japan, Saturday, June 29, 2019. (AP Photo/Susan Walsh)

President Donald Trump, left, stands with South Korean President Moon Jae-in, right, as they prepare to pose for a photo during a visit to the tea house on the grounds of the Blue House in Seoul, South Korea, Saturday, June 29, 2019. Trump is making a quick trip to Seoul after attending the G-20 summit in Osaka, Japan. (AP Photo/Susan Walsh)

FILE - In this Dec. 18, 2018 file photo, Argentina's President Mauricio Macri speaks as the new pro tempore president of Mercosur, flanked by Uruguay's Foreign Affairs Minister, Rodolfo Nin, left and Uruguay's President Tabare Vazquez, right, at the 53rd Mercosur Summit in Montevideo, Uruguay. Argentina's Foreign Ministry said in a statement Friday, June 28, 2019, that South America's Mercosur trade bloc has struck a "strategic association" trade deal with the European Union, clinched in the Belgian capital of Brussels following two decades of negotiations. The Mercosur bloc includes Argentina, Brazil, Paraguay and Uruguay. (AP Photo/Matilde Campodonico, File)

U.S. President Donald Trump, right, shakes hands with Russian President Vladimir Putin during a bilateral meeting on the sidelines of the G-20 summit in Osaka, Japan, Friday, June 28, 2019. (Mikhail Klimentyev, Sputnik, Kremlin Pool Photo via AP)

A currency trader gestures at the foreign exchange dealing room of the KEB Hana Bank headquarters in Seoul, South Korea, Friday, June 28, 2019. Asian stocks sank Friday as investors waited for a meeting between Presidents Donald Trump and Xi Jinping that they hope will produce a truce in spiraling U.S.-China trade tensions.(AP Photo/Ahn Young-joon)

President Donald Trump, fifth from left, joins other leaders for a group photo at the G-20 summit in Osaka, Japan, Friday, June 28, 2019. (AP Photo/Susan Walsh)

FILE - In this June 11, 2019, file photo trader Timothy Nick, left, and specialist Dilip Patel work on the floor of the New York Stock Exchange. The U.S. stock market opens at 9:30 a.m. EDT on Thursday, June 27. (AP Photo/Richard Drew, File)