Both Obama and Trump are on the campaign trail, but only one of them appears to be descending into madness

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Barack Obama versus Donald Trump. It is the presidential election that never happened but has come to define an era of US politics.

Obama is back on the campaign trail for the midterms, still electrifying crowds, earning shouts of “We love you!” and skewering his successor. “What’s up with the gold?” he asked a crowd in Detroit. “I mean, he’s got the White House looking like Saddam Hussein opened a Cheesecake Factory.” This has, predictably, set off a mini culture war involving questions of elitism and the tastefulness of chain restaurants.

US health secretary falsely claims at Mike Rogers rally that Arabs have never won major prizes in science or literature

Robert F Kennedy Jr, the US health secretary, faced backlash on Wednesday for a “wildly racist tirade” during a campaign stop in Michigan in which he falsely asserted that Arabs never won major awards in science or literature.

Kennedy was speaking at the Monday night event in Grand Rapids in support of Mike Rogers, the Republican US Senate candidate who is trailing his Democratic midterms opponent Abdul El-Sayed, a Muslim, in polling.