Blake Neff, who was Tucker Carlson Tonight's top writer having worked for Fox News for nearly four years, "has for years been using a pseudonym to post bigoted remarks on an online forum that is a hotbed for racist, sexist, and other offensive content," CNN Business' Oliver Darcy reports. Darcy contacted Fox News on Thursday night about Neff, and a Fox News spokesperson responded this morning that Neff had resigned. Neff previously worked at the Carlson co-founded conservative publication The Daily Caller. In a recently published interview with Dartmouth Alumni Magazine, Neff said of being Carlson's top writer: "Anything he’s reading off the teleprompter, the first draft was written by me. I’ve gotten used to what he likes and what he thinks about." Darcy notes that as Carlson's top writer, Neff was one of the most influential people in America. "During the years that Neff wrote for him at Fox, Carlson has hosted one of the most influential shows on cable news," says Darcy. "In the last quarter, Carlson had not only the highest-rated program in cable news, but the highest-rated show in the history of cable news. Carlson also counts President Trump among his most loyal viewers. On multiple occasions, the President has tweeted out videos of Carlson's program. Which is to say, the scripts that Neff likely helped write and shape were being shared by the President of the United States."