Amtrak is the federal government. I am talking about one states public rail system connecting with another states rail system. New York to New Jersey was given as an example in the parent post.

Amtrak is great for vacations or other travel but I don’t thinks its use case is daily commuters. At least it’s not the use case for the majority of the US.

The Amtrak Cascades line is actually state owned and operated: http://www.amtrakcascades.com/about One example, at least!