He graduated Texas Law School in Austin with a JD and was a partner in a large New York law firm, Patterson Belknap Webb & Tyler.[1] He "has advised sovereigns on the pursuit of kleptocratic predecessors."[2] In April 2007, he joined Harper's Magazine as a legal affairs and national security contributor, and he currently authors the No Comment blog at Harper's Online.[3][4] Horton has also written for American Lawyer,[5] "the Web's leading legal news and information network" and The Daily Beast[6] and has been interviewed on Antiwar Radio.[7] and the John Batchelor Show.