F YOUR job requires you to spin, some days are harder than others. And if you’re one of Donald Trump’s defenders, some very hard days are on the way. We may be at the beginning of a long and tortuous period for the president, with his former campaign chairman convicted of multiple crimes, his former personal lawyer not only pleading guilty to crimes but also directly implicating Trump, and who knows what else to come in the next few days, weeks and months. So rhetorical defences are already being erected. Unfortunately for the US president, these arguments range from irrelevant...