Note: This story has been updated for clarity.

Before the Republican winner of the Iowa Caucus had been determined on Tuesday night, Vermont’s independent Senator Bernie Sanders appeared on the set of Comedy Central’s The Colbert Report, touting a new book and his petition to overturn the 2010 U.S. Supreme Court Citizens United v. Federal Election Commission decision by way of a Constitutional amendment. “Corporations are not people,” Sanders told host and satirist-comedian Stephen Colbert, who portrays a right-leaning pundit on the show. “They do not have freedom of expression rights in terms of buying elections.”