Now on bookshelves: “Deconstructing Obama: The Life, Loves and Letters of America’s First Postmodern President” by Jack Cashill, published by Simon & Shuster. The new book uncovers “major discrepancies in the accepted narrative” of President Obama‘s life, particularly his earliest years. Mr. Cashill says the news media is indifferent to such information. He’s also convinced that former University of Illinois professor Bill Ayers — who co-founded the radical Weather Underground in 1969 — helped craft “Dreams From My Father,” the president’s much-acclaimed memoir.When I started this inquiry, I was less interested in President Obama‘s birth certificate than I was in...