Opening statements were delivered in Donald Trump's New York criminal trial. And Mary Trump reacts to her uncle's criminal trial. Adam Klasfeld, Andrew Weissmann, Melissa Murray, and Mary Trump join Lawrence O'Donnell.

The Washington Post reports Mark Meadows and Rudy Giuliani are among the seven unnamed Trump aides charged in Arizona. Also, Donald Trump's January 6 case is on hold as the Supreme Court weighs his immunity claim. And President Biden picks up another key union endorsement. Timothy Heaphy, Andrew Weissmann, and Jimmy Williams, Jr. join Lawrence O'Donnell.