Mark Salter is a speechwriter, known for his collaborations with United States Senator John McCain.Salter worked with McCain on political speeches and several nonfiction books. He also served on McCain's staff for 18 years, and was chief of staff.Salter's work has appeared in the Washington Post, Wall Street Journal, The Atlantic, Esquire and Real Clear Politics. He co-wrote seven books with John McCain, and one memoir published after McCain's death.