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Following the CNN GOP debate Tuesday night, MSNBC “Hardball” host Chris Matthews interviewed with GOP presidential front-runner Donald Trump and the two sparred over a question by Matthews.

Matthews asked Trump if he was “honest when he says that Barack Obama isn’t a legitimate president,” but Trump would not budge.

Trump said he knew that question was coming, and he replied, “I don’t answer that question because once I answer that question, they don’t want to talk about the economy.”

Matthews continued to prod, but Trump remained firm on his stance.