It would make sense hiring a European or Asian country to come in and build it for us with 1/5 of the resources and in 1/3 the time. If a country like Switzerland can dig through solid granite for 35 miles under a mountain (Gotthard Base Tunnel) someone out there other than a US company should be able to lay a few hundred miles of track.
Even given that, the survivability of a crash in a modern European train is very good. The Grayrigg derailment in the UK, for example, had an Italian-built express train jump the rails at 95mph and jackknife down an embankment. One death (she was 84).
UK railways carried 64.4 billion passenger kilometers last year. The Grayrigg derailment was the last accident involving the death of a passenger. It was in 2007. How many road traffic accidents avoided by rail travel since then?
Edited to add: there are many ways for government and economies to function.