The race to become America's next President has caused many voters to look at the country's relationship with Mexico and question 21st Century American identity. In this Travel Show special Rajan Datar travels by train along America's southern border to investigate the country's long and sometimes complex history with its southern neighbour and looks at the other influences that have helped shaped the region. Starting at the originally French port city of New Orleans, Rajan traces the story of American expansion westwards stopping off at The Alamo, where Texan frontiersmen entered American mythology by facing overwhelming Mexican forces before heading to Big Bend National Park where he kayaks along the dividing line between the two countries.
