Trump threatens to unleash a trade war
Donald Trump's return to the White House is already causing alarm with some of America's major trading partners. China, Mexico and Canada are in the firing line with the US president planning to slap higher tariffs on imported products from all three countries. Donald Trump says the higher taxes are in retaliation for allowing the flow of undocumented migrants and the drug Fentanyl entering the US. Guest: Bill Reinsch, Senior trade expert at the Centre for Strategic and International Studies in Washington DC; former president of the National Foreign Trade Council