By Tim Reid (Reuters) – Donald Trump said on Tuesday he has never read Adolf Hitler’s manifesto ‘Mein Kampf’ and is not quoting the German dictator when he says illegal immigrants inside the U.S. are poisoning and destroying the blood of America. In a rally in Iowa, Trump – the clear frontrunner for the Republican presidential nomination – repeated language he has used in recent campaign events about illegal immigrants that has been criticized for being xenophobic and similar to language used by Hitler. “It’s true. They are destroying the blood of our country,” Trump told a crowd of supporters…