Treasury Secretary Mnuchin criticizes climate activist Greta Thunberg: 'Who is she?'

Speaking at a press briefing at the World Economic Forum in Davos, Switzerland, Mnuchin was asked whether the world's largest economy needed to completely and immediately divest from fossil fuels. "Is she the chief economist or who is she? I'm confused," Mnuchin said, before adding his comments were "a joke."
01:35
Thu, Jan 23 202012:59 PM EST