Roberts’s most famous opinion may be the one he wrote in NFIB v. Sebelius (2012), which largely upheld the Affordable Care Act. The chief broke with his four Republican colleagues, each of whom voted to strike down the entire law. In the process, he laid out a fairly robust theory explaining why eliminating a health law hated by Republicans was not the proper role of the judiciary.
Members of this Court are vested with the authority to interpret the law; we possess neither the expertise nor the prerogative to make policy judgments. Those decisions are entrusted to our Nation’s elected leaders, who can be thrown out of office if the people disagree with them. It is not our job to protect the people from the consequences of their political choices.
— Read on www.vox.com/2020/1/3/21046493/chief-justice-roberts-annual-report-democracy