Former U.S. Rep. Michael Grimm, a New York Republican who resigned from Congress following a tax fraud conviction, is paralyzed from the chest down after being thrown from a horse during a polo tournament, according to friends who are raising funds to pay for the ex-lawmaker's medical care. Grimm, 54, suffered the devastating injury in September and is now being treated at the Kessler Institute for Rehabilitation in New Jersey, where the late actor Christopher Reeve was treated after a similar equestrian accident in 1995, according to Vincent Ignizio, a friend of Grimm's who is a former New York City...