New Mexico's legislature closed its session without making any commitment to fund the state's share of costs to keep Amtrak's Southwest Chief on its current route.
The session ended Thursday with none of the five bills seeking ways to maintain the passenger train line passing.
Amtrak has proposed that New Mexico, Colorado and Kansas all chip in to improve and maintain more than 600 miles of track through their states.
The company says the Southwest Chief's route might change otherwise, causing some communities to lose passenger service.
The rail operator would need to reach a deal with Burlington Northern Santa Fe, which owns the track Amtrak uses.