Lawrence: There is no bigger story than, is Trump, who has the nuclear codes, ‘losing his mind’?

Tonight on The Last Word: Sen. Raphael Warnock says voters feel “betrayed” by “crushing prices.” Also, Democrats seek to flip the GOP-held Kansas Senate seat. And Spy Magazine is resurfacing vintage Trump articles. Sen. Raphael Warnock, Adam Hamilton, Susan Morrison, and Kurt Andersen join Lawrence O’Donnell.