Questions are being raised again about the role Bill Ayers, a former radical activist turned elementary-education theorist, played in the writing of President Barack Obama's bestselling memoir, "Dreams From My Father." Ayers, a 1969 co-founder of the self-described communist revolutionary group Weather Underground, is now promoting his new book, "Public Enemy," and his publisher is using suggestions that Ayers wrote the president's book in its publicity material, Investor's Business Daily reports. Beacon Press wrote in a blurb on Amazon.com that in the book, Ayers "reveals how he has navigated the challenges and triumphs of this public life with steadfastness and...