The Last Word with Lawrence O'Donnell 12/16/16

Trump’s unforgivable birtherism continues

Trump’s favorite sheriff, Joe Arpaio, held another news event to claim President Obama was not born in the USA. Birtherism began Trump’s political campaign and Lawrence O’Donnell says his lack of apology is unforgivable. Eugene Robinson joins Lawrence. ... more Duration: {{video.duration.momentjs}}