Gavin Newsom: California's governor takes on Trump, woos embattled Democrats

President Donald Trump's decision to bypass the authority of California's Governor Gavin Newsom by calling in the National Guard and Marines to quell immigration protests has fired up the Democratic head of the richest US state – and an embattled left base. But as Newsom challenges the Trump administration in the courts, his liberal bulldog style could damage his presidential ambitions.