@feld @PeterBronez @patterfloof
The US already has the rail rights-of-way it needs. It also has "eminent domain" laws that allow the government to buy for "fair market value" any land it wants for any purpose that would benefit many, such as shopping malls and sports arenas.
Since the introduction of the automobile and airlines, the US has lacked the will to keep effective passenger rail services, from the Los Angeles streetcars to the transcontinental lines.