![The clock is ticking on the next big threat to the US economy](https://cdn.cnn.com/cnnnext/dam/assets/220912152759-01-freight-trains-061521-file-super-tease.jpg)
The clock is ticking on the next big threat to the US economy
CNN
This Friday, tens of thousands of railroad workers are poised to go on strike, potentially bringing a nearly a third of all US freight to a grinding halt. It would be the first national rail strike in 30 years.
As the clock ticks, the threat of the work stoppage is already having an impact. Amtrak preemptively suspended service on some of its long range routes. And railroads have already stopped accepting shipments of hazardous and other security-sensitive materials, citing concerns about the strike.
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