Elena Kagan's Commerce Clause

NRO  "Coburn's hypothetical is basic enough. If Congress passed a law mandating that Americans eat their vegetables, is that covered under the Commerce Clause? Kagan's answer, or lack thereof, is telling:"

Jon Stewart asks, Has This Government Proven Itself Competent Enough To Regulate Industry?  "If that's what this White House considers competence, we're REALLY in trouble. As for Stewart, that's one heckuva good job by a comedian. Makes the clowns at MSNBC look like the real jokers, doesn't it? "