Read more at https://on.ft.com/2Opzrl9<br /><br />Demetri Sevastopulo travels to Texas and Tennessee to see how immigration and fear of a migrant caravan in Mexico are influencing an already divided electorate.<br /><br />Subscribe to FT.com here: http://bit.ly/2GakujT<br /><br />Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes
