Former President Barack Obama delivered his most personal, furious indictment yet of Donald Trump and a Republican Party he said was in thrall to a man who he believes had, over the last week, violated the trust of Americans devastated by a pair of catastrophic hurricanes. “The idea of intentionally trying to deceive people in their most desperate and vulnerable moments – my question is, when did that become OK?” Obama said, pointing to Trump’s lies about the federal government withholding assistance to hard-hit “Republican areas” or “siphoning off aid to give to undocumented immigrants.”