WASHINGTON — U.S. President Donald Trump and members of his administration are growing emphatic in promoting an anti-malaria drug not yet officially approved for fighting COVID-19, even though scientists say more testing is needed before it’s proven safe and effective against the virus Trump trade adviser Peter Navarro promoted the drug, hydroxychloroquine, in television interviews Monday, a day after Trump publicly put his faith in the drug to lessen the toll of the coronavirus pandemic. “What do I know, I’m not a doctor,” Trump told reporters Sunday. “But I have common sense.” The administration’s public backing of the drug comes after a heated Situation Room meeting of the White House’s coronavirus task force on Saturday, in which