Even though they might be foreign companies, they do tend to be built in the US. IIRC Alstom in California made all the cars for the new Florida high speed line that starts running this year.
It takes a while before you can start building rolling stock domestically. Melbourne just started making their class E trams a few years back, which they tout as being "made entirely in Victoria" and yet they've had the largest tram network in the work for decades.
It takes a while before you can start building rolling stock domestically. Melbourne just started making their class E trams a few years back, which they tout as being "made entirely in Victoria" and yet they've had the largest tram network in the work for decades.