US President Donald Trump has told supporters that his proposed wall along the border with Mexico could have solar panels fixed to it.
Addressing a rally in Iowa, he said the panels would provide cheap energy and help to pay for the controversial wall.
He suggested the plan was his own, saying: "Pretty good imagination, right? Good? My idea."
During his campaign, Mr Trump pledged to build a wall along the Mexican border to stop illegal immigration and drug trafficking.
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