WILMINGTON, CALIFORNIA - NOVEMBER 22: Freight rail cars sit in a rail yard on November 22, 2022 in Wilmington, California. A national rail strike could occur as soon as December 5 after the nation???s largest freight rail union, SMART Transportation Division, voted to reject the Biden administration???s contract deal. About 30 percent of the nation???s freight is moved by rail with the Association of American Railroads estimating that a nationwide shutdown could cause $2 billion a day in economic losses. (Photo by Mario Tama/Getty Images)