Former Gov. Mitt Romney could square off with Sarah Palin for the 2012 GOP presidential nomination, but he’s already gearing up to take her on in the world of book sales. Palin’s bestseller has been racking up sales for the former Alaska governor and vice-presidential candidate, and now Romney’s team is planning an ambitious national tour for the March release of his new book, “No Apology: The Case for American Greatness.” Romney aides in Utah are hoping for up to 10,000 fans at one of the first stops on the planned tour, a March 13 signing at the Salt Palace...