President Donald Trump misstated the facts Thursday when he asserted that the Food and Drug Administration (FDA) had just approved a decades-old malaria drug to treat patients infected by the coronavirus. After his FDA chief clarified that the drug still needs testing, Trump also overstated the drug’s potential upside in helping contain the outbreak. A look at his claims at a news briefing: Trump: “And we’re going to be able to make that drug available almost immediately, and that’s where the FDA has been so great. They’ve gone through the approval process....