Trump and allies intensify criticism ahead of court appearance.

Donald Trump and his allies are intensifying efforts to undermine the criminal case against him and drum up protests as the former president prepares for a federal court appearance on dozens of felony charges accusing him of illegally hoarding classified information. Trump's appearance in Miami will mark his second time in as many months facing a judge on criminal charges. The Justice Department's first prosecution of a former president concerns conduct that prosecutors say jeopardized national security and involves Espionage Act charges carrying the threat of a significant prison sentence in the event of conviction. Trump called on his supporters to join a planned protest at the Miami courthouse Tuesday, where he will be arraigned on the charges.