Trump's top trade negotiator confirms the China tariffs will increase on Friday, accuses Beijing of walking back on trade deal
The confirmation comes after President Donald Trump tweeted a threat to escalate the trade war.
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• Trump threatens seismic shift in trade war with China, suggesting new tariffs on $325 billion worth of Chinese goods
• Trump's trade war could cost every middle-class American family $453 and could eliminate 292,000 US jobs

