Tonight on The Last Word: President Biden campaigns in Wisconsin after clinching the Democratic nomination. Also, Fulton County Judge Scott McAfee dismisses three charges against Donald Trump in the Georgia election case. Plus, Trump is expected to attend the classified documents hearing in Florida Thursday. And David Hogg's PAC endorses young candidates running for Congress and state legislatures. Quentin Fulks, Ben Wikler, Gwen Keyes, Andrew Weissmann, Joyce Vance, David Hogg, Christine Cockley, and Ashwin Ramaswami join Lawrence O'Donnell.