Mexico boosted troop levels at the border after President Trump threatened a tariff on all Mexican goods coming into the U.S.
ICE arrests are being carried out across the United States since Donald Trump's inauguration last week. Newsweek's live blog is closed.
Eggs are being confiscated at the U.S. border with Mexico amid a bird flu outbreak that has depleted chicken populations.
China's tariffs - due to begin next Monday - would also apply to US oil and farm machinery, but more talks are due this week.
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