When actress Cate Blanchett researched an infamous CBS News expose of U.S. President George W. Bush's military service that led to the firing of journalist Mary Mapes, she came away with more questions than answers. "It's emblematic of the problem that readers face in trying to get to anything resembling the truth," the Oscar-winning actress, who plays Mapes in the movie "Truth". "The film asks, did the punishment meted out by CBS merit the so-called crime?" Blanchett said. "