(John Locher | AP file photo) This April 6, 2020, file photo shows an arrangement of hydroxychloroquine pills in Las Vegas. President Donald Trump and his administration kept up their out-sized promotion Monday of an malaria drug not yet officially approved for fighting the new coronavirus, even though scientists say more testing is needed before it’s proven safe and effective against COVID-19. Trump trade adviser Peter Navarro championed hydroxychloroquine in television interviews a day after the president publicly put his faith in the medication to lessen the toll of the coronavirus pandemic.