Scary stuff in the Post today. Dangerous train cargo passing though the District still poses a great threat to the city as D.C. lawmakers and environmentalists accuse “the Bush administration of waiting until after the Nov. 2 election to decide whether to require railroads to route hazardous materials around Washington.” The fear? Trains carrying chorine gas and other caustic and lethal substances derailing just blocks from the Capitol sending Bhopal-style plumes of gas across the…