Walker's book tour fueling 2016 speculation

Gov. Scott Walker is doing some high-profile interviews this week as part of a tour for his new book and the appearances are fueling buzz about a potential presidential run in 2016.

Walker criticizes Romney in new book

Republican Gov. Scott Walker takes GOP presidential nominee Mitt Romney to task for how he ran his 2012 campaign in his new book, offering a glimpse at what a Walker 2016 presidential run may look like.