Donald Trump: Bordering on the edge of logic

Back from Mexico, Trump is ramping up his anti-immigrant rhetoric to even harsher levels

Donald Trump: We will build a great wall along the southern border Picture: Bloomberg

In his Border Trilogy, the great American novelist Cormac McCarthy tells harrowing tales of callow Americans who head to Mexico on a whim. The ones who make it back alive return chastened, and wiser for the experience.

Not Donald Trump. In what may have been one of the most bizarre days of his baffling campaign, Trump returned from his flying visit to Mexico unabashed by the Mexican president’s claim that he had lied ...