Attorney General Loretta Lynch expressed regret Friday for meeting with Bill Clinton earlier this week, adding that doing so had "cast a shadow" on the Hillary Clinton email investigation.Speaking at the Aspen Ideas Festival in Colorado, Lynch was asked about her unusual meeting with the former president aboard an airplane parked on an Arizona tarmac."Friends, supporters, backers are saying, 'What on earth was she thinking talking to Bill Clinton?' So, what on earth [...]