US president Joe Biden launched a frontal attack on Donald Trump for his efforts to overturn the 2020 election, as the president cast this year’s likely rematch for the White House as a battle to save US democracy and its institutions. Speaking in the swing-state Pennsylvania in his first re-election campaign event of the year, Mr Biden denounced Mr Trump for sowing lawlessness and disorder in the country, for refusing to condemn political violence, and for using the rhetoric of Nazi Germany. “He’s willing to sacrifice our democracy to put himself in power,” Mr Biden said of Mr Trump, in...