The US is being accused of playing a ''dangerous game'' by slapping tariffs on steel and aluminium from some of its closest allies. Canada, Mexico, and the EU are planning retaliatory moves in what could be the start of a trade war. Economists say it could damage the US economy. Al Jazeera's Andy Gallacher reports from Miami. - Subscribe to our channel: http://aje.io/AJSubscribe - Follow us on Twitter: https://twitter.com/AJEnglish - Find us on Facebook: https://www.facebook.com/aljazeera - Check our website: https://www.aljazeera.com/