White House trade adviser Peter Navarro had a heated exchange with CNN anchor John Berman on Monday after Navarro argued that his training in statistical studies as an economist made him qualified to disagree with health experts on the use of the anti-malaria drug hydroxychloroquine to treat the novel coronavirus. "Doctors disagree about things all the time. My qualifications in terms of looking at the science is that I'm a social scientist," Navarro told "New Day" anchor Berman. "I have a Ph.D. And I understand how to read statistical studies, whether it's in medicine, the law, economics or whatever." Toward...