Hamiltonâ??s Steel industry and business community are on tenterhooks after President Donald Trump pledged to impose a 25 per cent tariff next week on Steel exported to the U.S.â??This is the worst-case scenario for Hamilton,â?* said local chamber of commerce president Keanin Loomis. â??We didnâ??t expect this.â?*Trump announced Thursday his plans to introduce the Steel tariff as well as a 10 per cent tariff on aluminum.The president was known to be weighing a variety of options: massive tariffs on just a few countries believed to ship dumped...