jeff cutmore live from london. thanks. i want to go to washington with hearings already under way related to the irs scandal. lois lerner, the irs official at the center of the scandal has invoked her fifth amendment right to avoid answering lawmakers questions, which will probably be unpopular. former irs commissioner shulman did testify refusing to apologize for the agency's actions during an exchange yesterday on capitol hill. >> i am -- i am deeply, deeply saddened by this whole set of events. i read the ig's report and am very much regret that it happened and happened on my watch. >> is that an apology? >> i don't know the details of your constituents. i don't know what happened to them. >> so it's not your responsibility? >> i -- >> the buck doesn't stop with you? >> i certainly am not personally responsible for creating a list