Election law experts say House Speaker Mike Johnson is wrong when he says it is “unlawful” for Democrats to “simply just switch out a candidate who has been chosen through the … democratic process.” Although President Joe Biden was chosen by the vast majority of primary and caucus voters, and amassed more than 99% of the pledged delegates who will meet at the Democratic National Convention in mid-August, he has not been formally nominated. And since he has voluntarily dropped out...