When talk turns to immigration, Republican presidential candidate Donald Trump is often the first to speak up. Throughout his campaign, he has promoted a xenophobic immigration policy that includes the building of a wall along the border that lies between the US and Mexico. His suggestion is both shocking and outlandish, but many of his supporters are in favour of the idea despite the infeasibility of such an expansive construction. This infographic by RealMoney.co.uk examines the real cost of Donald Trump’s wall, and the likelihood of it ever coming into being: