Tensions between railroad unions and companies have been high recently after four unions rejected the contract and caused a return to the bargaining table. However, the House of Representatives approved legislation today to impose the tentative contract deal made in September onto all twelve of the rail unions, as well as mandate paid sick leave benefits to workers. This decision will effectively block any potential railroad strikes and was encouraged by President Biden in order to avoid the supply chain disruptions that would ensue from such a strike. Some labor leaders have spoken against the government's intervention in this matter though, fearing it may undermine the collective bargaining power rail unions wield in the future.
See "US railroad strike averted by House of Representatives voting to impose labor contract on all of the unions ", David Shepardson , Reuters, November 30, 2022