John Mellencamp has a plan for improving the way the U.S. government is run: give presidents the opportunity to serve for 16 years. During a conversation with HuffPost Live's Marc Lamont Hill about his new album "Plain Spoken," Mellencamp spoke on Farm Aid, the benefit concert he launched with Willie Nelson and Neil Young in 1985, which Mellencamp said educated him about the troubling connection between the government and big agriculture. When asked for a solution to those issues, Mellencamp suggested lengthening the term limit for presidents and shortening it for those in the legislative branch. "A president can have four terms.