Yellen looks to face a grilling on Fed transparency and conduct

The chairman of this committee is after blood

Yellen is just about to read he testimony but she's already been targeted by the chairman over the Fed's refusal to comply with the congressional order to explain certain events relating to leaks. He was pretty strong in his views and so that's likely to be a big part of the questioning later and that could lead to some squirming moments for Yellen