Amtrak suspends service on key routes, including the Borealis, due to railcar corrosion.

Amtrak has suspended service on several routes, including the Borealis between St. Paul and Chicago, due to corrosion found in its Horizon railcars. The affected cars have been removed, causing service disruptions and leading to the use of bus replacements. The issue affects multiple routes like the Cascades, Borealis, and Hiawatha, with no clear timeline for the railcars' return to service.