Republicans, meanwhile, went about lying with their customary abandon. They slandered the president as, variously and sometimes all at once, Kenyan-born (Donald Trump’s meme); an apologist for Islamic terrorism (Mr. Romney himself, in accusing the president of sympathizing with Benghazi murderers); a secret homosexual (Jerome Corsi, a popular conspiracy theorist and member of the Romney campaign press corps); and a heretic of possibly Christian persuasion who, in supporting same-sex marriage, has “shaken his fist at God” (the Rev. Franklin Graham, son of Billy).