Chief Justice John Roberts upheld the individual mandate of the Affordable Care Act because he rejected formalism and embraced realism in constitutional analysis, and because he deferred to Congress, acknowledging its right to make policy choices.
Akron Law Review
Huhn, Wilson, "Realism Over Formalism and the Presumption of Constitutionality: Chief Justice Roberts’ Opinion Upholding the Individual Mandate" (2013). Akron Law Publications. 96.