Amtrak used to have an Onboard Service Supervisor until about 2001/2002. Then, from what I have heard, the "Union" members did not like to be managed on board by a management person and they wanted a Union person. An argument ensued, which finally led to removal of the Onboard Supervisor, and everyone, except the poor Customer was happy I suppose. That is where it stands at present. Apparently someone has to come up with a way of doing it that is acceptable to the relevant Unions on this one and most appear to feel their time is better spent elsewhere. As usual, the Customer suffers.