How the border could cost Biden the election

DONALD TRUMP’S mother came from Tong (population 500), a remote Scottish settlement that was once in Viking territory. His grandfather came from Kallstadt (population 1,200), a village in Rhineland-Palatinate that produced the Heinz family. Joe Biden’s ancestors came from Ireland and England. In America everyone is from somewhere else—even Native Americans, though they have been there much longer than anyone. Such is the country’s appeal that 160m adults around the world say they would move there, too, if only they had the chance. That is many millions more than most Americans are willing to allow in.

This mismatch is at the heart of the issue that could cost President Biden the election. In 2016 Mr Trump rode “border chaos” all the way to the Republican nomination and then on to the presidency. At the time, he campaigned as if record numbers of migrants were coming across the border illegally. That was not true then, but it is now.