As to Obamacare:
‘A few weeks ago, I testified before the Senate Judiciary Committee hearing on the constitutionality of the individual insurance mandate.’
Charles Fried and Randy Barnett among others, testify as to the constitutionality of the Affordable Care Act (Nearly 3 hrs, but likely worth your time. You can skip to the parts you’d like).
Related On This Site: Atul Gawande At The New Yorker: ‘Testing, Testing’…From The New Yorker: Atul Gawande On Health Care-”The Cost Conundrum”