Rates are going up by double digits and younger, healthier enrollees are leaving
                                
                                
                                    (Newser) -
                                    Three states so far have come out with preliminary premium-rate requests for ObamaCare in 2019, and a column by Catherine Rampell at the  Washington Post  suggests that a "death spiral" is underway for the health insurance program. Maryland's average rate increase is 30%, Virginia's is 13.4%,...