Buying the tech from Japan isn't gonna solve the fact that you don't even know how to manage a normal passenger rail line, buddy!
Also I know this is technically a Japanese news site reporting from their perspective, but the US is still seriously considering this on their end, just like how they've been considering it since Japan first introduced the SCMaglev prototype decades ago.
The US is a rich country and can easily attract talent if they actually want to.
They can build High speed railway if they want to but there's no political will and American culture has been conditioned to hate public facilities.