Dollar Rises as Trump Announces Tariffs on Steel and Aluminum Imports Singapore, 10 Feb (ONA) --- The US dollar firmed today after US President Donald Trump said he was set to impose new 25% tariffs on all steel and aluminium imports, putting pressure on the euro and the commodity-focused Australian and New Zealand dollars. The dollar index, which measures the US currency against six other units, was steady at 108.23 in early trading. Sterling was little changed at ...