NBC's Williams Interrogates Romney: 'Are You A Hidden Man?'

In an interview with Mitt Romney in London on Wednesday, NBC Nightly News anchor Brian Williams grilled the Republican candidate about releasing more tax returns: "People hear he's not going to release the rest of his returns and they wonder why. They wonder, is there a year there where he paid no taxes? They wonder about expensive horses and houses....what is it that is preventing you from releasing the rest of your returns?"