Source: Nedra Pickler / AP / MSNBC Washington – Prosecutors have obtained emails between John Edwards and a former aide to use as evidence at trial that he knew about payments to his pregnant mistress even while he was publicly denying it, people familiar with the case told The Associated Press on Monday. Dozens of emails were exchanged between Edwards and his former speechwriter Wendy Button as they worked on a never-released draft statement to acknowledge paternity of his out-of-wedlock [...]