Lou Dobbs, the conservative commentator who spent decades at CNN and Fox Business, has died, his family announced on Thursday. He was 78 years old. “It’s with a heavy heart that we announce the passing of ‘The Great Lou Dobbs,” a statement from his family said. “Lou was a fighter till the very end – fighting for what mattered to him the most, God, his family and the country.” The statement added: “Lou’s legacy will forever live on as a patriot and a great American. We ask for your prayers for Lou’s wonderful wife Debi, children and grandchildren.” Details about the cause of Dobbs’ death were n…