Steel banned

摘要

HISTORY will rhyme on March 23rd, when Donald Trump's tariffs on steel and aluminium imports are due to come into force. Several previous presidents, from Ronald Reagan to Barack Obama, also used tariffs in an attempt to protect America's steel producers from foreign competition. (There are historical echoes, too, in Mr Trump's plans to slap tariffs on a range of Chinese imports; in the 1980s Japan was the target.) A rhyme is not a repeat. But past experience is not encouraging.