The credibility of Massachusetts Democratic Senate candidate Elizabeth Warren took another hit today as Boston radio talk show host Howie Carr released evidence that appears to confirm Ms. Warren may have plagiarized at least three of the five recipes she submitted to the 1984 Pow Wow Chow cookbook edited by her cousin Candy Rowsey. Two of the possibly plagiarized recipes, said in the Pow Wow Chow cookbook to have been passed down through generations of Oklahoma Native American members of the Cherokee tribe, are described in a New York Times News Service story as originating at Le Pavilion, a fabulously...