China imposed tariffs on U.S. imports and warned several companies, including Google, of possible sanctions in retaliation for Trump's tariffs. Read also: China supports Trump’s plan to resolve Ukraine crisis,

President Donald Trump's tariff dispute with China, Canada and Mexico over fentanyl smuggling and illegal immigration has led to retaliation by the Chinese government.

The leaders of Mexico and Canada each said they had struck agreements to pause tariffs for 30 days, but levies on products from China were still set to take effect just after midnight.