Philly Amtrak Fan wrote: You have two choices to get more service, get more money (which doesn't look like it's happening) or cut service elsewhere to add service.
How many States can Amtrak afford to cut services to before it looses the necessary political support in the US Senate?
States today without any Amtrak service: (4 States = 8 Votes)
Alaska, Hawaii, South Dakota, and Wyoming.
States today with Amtrak service only because a State subsidizes a train: (4 States = 8 Votes)
New Hampshire*, Maine, Oklahoma, and Vermont.
States today that have additional Amtrak services provided with State subsidizes: (15 States = 30 Votes)
California, Connecticut*, Illinois, Indiana, Michigan, Missouri, New Jersey*, New York, North Carolina, Oregon, Pennsylvania, Texas, Virginia, Washington, and Wisconsin.
Note: (*) indicates States getting Amtrak services as a benefit from another's subsidizes.
My list indicates 46 Votes from States without Amtrak services at all, or States that subsidizes all or apart of their Amtrak services.
If you drop the LD trains out west as you proposed, add the following States to the lists.
Dropping Empire Builder LD train:
No Amtrak services: Idaho, Montana, and North Dakota. (3 States = 6 Votes)
States subsidizing Amtrak services: Minnesota. (1 State = 2 Votes)
Dropping California Zephyr LD train:
No Amtrak services: Nevada, Utah, Colorado, Nebraska, and Iowa (5 States = 10 Votes)
Dropping Southwest Chief LD train:
No Amtrak services: Arizona, New Mexico, Colorado#, and Kansas (4 or 3# States = 8 or 6# Votes)
States subsidizing Amtrak services: Nevada (1 State = 2 Votes)
Dropping Texas Eagle LD train:
No Amtrak services: Arizona#, New Mexico#, Texas, and Arkansas (4 or 2# States = 8 or 4# Votes)
Dropping Sunset Limited LD train:
No Amtrak services: Arizona#, New Mexico#, Texas# (3# States = 6# Votes)
Dropping City of New Orleans LD train:
No Amtrak services: Tennessee (1 State = 2 Votes)
That list does not include any LD trains to the East Coast.
But once you start down the slipperily path of eliminating LD trains out West, or reducing LD train frequencies to less than daily, - - - political support for Amtrak will decline in the Senate.
I don't think that once you decide to kill the Empire Builder that you can limit the cuts just to it. Other trains will get cut, if not immediately, soon. At some point, there will not be sufficient political support to subsidize Amtrak.