My first impression from day two at the Supreme Court: I was more confident yesterday than I am today. With the caveat that I know health policy a lot better than I know law, I can still imagine the justices upholding the individual mandate. But, at this point, I can just as easily imagine them striking it down. Tuesday's hearing was energized and contentious, from start to finish. But while the justices hammered lawyers from both sides with difficult questions, Solicitor General Don Verrilli seemed to struggle more than Paul Clement, attorney for the states.