The problems affecting high-speed rail in the US are the same problems that prevent low-speed rail, streetcars, subways, and buses from being more common -- people don't see themselves using such things and so they don't want to pay for them.

In the Bay Area, the Caltrain commuter train runs from San Jose to San Francisco, through the downtown areas of most major cities in between. It is currently so popular that it is significantly over capacity every day. Yet it is still a constant political battle to get funding to improve the system, even though the Bay Area is one of the most educated and politically liberal parts of the country, where support for public transit is higher than many other places.

Sometimes I think we would have much more transit funding overall if we set aside part of the transit budget to send Americans to other countries on vacation, so they will return knowing how good public transit can actually be.