Federal prosecutors are examining emails between Dr. Vladimir “Zev” Zelenko — a Hasidic doctor touting the controversial drug hydroxychloroquine as a treatment for Covid-19 — and a right-wing political commentator, the Washington Post reported. Zelenko is currently collaborating with Jerome Corsi, a commentator best known for propagating the falsehood that President Barack Obama was born outside the U.S., on a website that connects people with doctors. Zelenko is listed as a “medical adviser” on the site. Zelenko has become a frequent presence on conservative media, from Fox News to Donald Trump lawyer Rudy Giuliani’s podcast (the two speak almost daily,...