On paper, the US constitution is a thing of beauty. But the would-be emperor in Washington has revealed its great weaknessAmerica’s big birthday has come at a bad time. On Saturday it will be a divided nation that marks 250 years since 13 North American colonies declared their independence from th e Great Britain of George III. Many will be anxious that the republic they established that day is fragile – not least because of the would-be emperor in the White House.Some will console themselves that hope and angst have always been intertwined in the American story. From the very start, confidence in a bright, exceptional US future was combined with foreboding and doubt. At the close of the 1787 constitutional convention, a woman approached one of the founding fathers, Benjamin Franklin, to ask if the delegates had established a monarchy or a republic. Franklin’s answer: “A republic, if you can keep it.”Jonathan Freedland is a Guardian columnistDo you have an opinion on the issues raised in this article? If you would like to submit a response of up to 300 words by email to be considered for publication in our letters section, please click here. Continue reading... ...read more read less