The main purpose of this legislation, known as the Polar Express Act of 2026, is to direct the Secretary of Transportation to conduct a feasibility study for a new rail route that would connect Alaska to the continental rail network in the United States. The goal is to explore the potential benefits, costs, and logistics of establishing this rail link. Key provisions of the Act include the requirement for the Secretary of Transportation to start the feasibility study within 180 days of the law being enacted.