Joe Biden is practising some Clintonian politics

President Joe Biden says he is in a battle for the soul of America. He is out to save democracy at home from Donald Trump and abroad from Vladimir Putin of Russia and Xi Jinping of China. Mr Biden also wants to restore America’s manufacturing, rebuild its infrastructure, bring peace to the Middle East and confront climate change. And yet none of that seems to mean quite as much to most Americans as when he starts railing about finding fewer potato chips in a bag than he used to.