Trump considers import tax to pay for wall

Mexican President Enrique Pena Nieto has cancelled a planned meeting with President Donald Trump, signalling a remarkable souring of relations between Washington and one of its most important international partners just days into the new administration.

The rift capped days of increasingly confrontational remarks - on Twitter and in duelling public appearances - between the two men, whose countries conduct some 1.6 billion dollars a day in cross-border trade, and co-operate on everything from migration to anti-drug enforcement to environmental issues.