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FILE - Michigan acting head coach Biff Poggi reacts after his team made a field goal against Nebraska during the first half of an NCAA college football game Saturday, Sept. 20, 2025, in Lincoln, Neb. (AP Photo/Rebecca S. Gratz, File)

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FILE - Michigan acting head coach Biff Poggi watches as his team plays against Nebraska during the first half of an NCAA college football game Saturday, Sept. 20, 2025, in Lincoln, Neb. (AP Photo/Rebecca S. Gratz, File)

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Nebraska's Jamarques Lawrence (10) and the Nebraska bench celebrate after Berke Büyüktuncel made a three-point shot during the second half of an NCAA college basketball game, Wednesday, Dec. 10, 2025, in Lincoln, Neb. (AP Photo/Rebecca S. Gratz)

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Members of one union rejected a tentative deal with the largest U.S. freight railroads Wednesday, while two ratified agreements and three others remained at the bargaining table just days ahead of a strike deadline, threatening to intensify snarls in the nation's supply chain that have contributed to rising prices.