Over the past few days, two of the lawyers who tried to help former President Donald J. Trump stay in power after losing the 2020 election pleaded guilty in a Georgia racketeering case and have agreed to cooperate with prosecutors against him. Richard Faussett, who writes about politics in the American South for The Times, explains why two of Mr. Trump’s former allies have now turned against him. Guest: Richard Fausset, a correspondent for The New York Times covering the American South.