If you're looking for a cheap way to see the entire United States... we have the trip you need!
According to Thrillist,
You can take this extremely cheap trip, and according to travel blogger Derek Low, from coast-to-coast on Amtrak for as little as $213!
It takes you from San Francisco to New York going through multiple cities and major landmarks along the way! Basically you can see the ENTIRE continental US, which is 3,397 miles across 11 states, without going broke!