Jane Meredith Mayer (born 1955) is an American investigative journalist who has been a staff writer for The New Yorker since 1995. She has written for the publication about money in politics; government prosecution of whistleblowers; the United States Predator drone program; Donald Trump's ghostwriter, Tony Schwartz; and Trump's financial backer, Robert Mercer. In 2016, Mayer's book Dark Moneyin which she investigated the history of the conservative fundraising Koch brotherswas published to critical acclaim.