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Chief Justice of the United States
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John Glover Roberts Jr. is the 17th Chief Justice of the United States, nominated by President George W. Bush in 2005. An institutionalist and brilliant appellate advocate before joining the bench, Roberts has spent his tenure attempting to preserve the Supreme Court’s legitimacy in an era of hyper-partisanship. However, the arrival of a 6-3 conservative supermajority has frequently marginalized his role as a centrist swing vote, pulling the Court significantly to the right of his preferred incrementalism. In the mid-2020s, Roberts authored some of the most consequential and fiercely debated opinions in American history, most notably the 2024 ruling in *Trump v. United States*, which granted presidents broad absolute immunity for official acts. As the head of the federal judiciary in 2026, he is navigating the treacherous waters of the second Trump administration, facing a deluge of emergency appeals regarding massive executive deregulation, immigration sweeps, and the unprecedented actions of the Department of Government Efficiency (DOGE). Furthermore, he has been forced to manage the severe, ongoing ethics crises engulfing his associate justices.
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17th Chief Justice of the United States (2005–Present), presiding over the Roberts Court for two decades
Presided over three presidential impeachment trials in the U.S. Senate (Donald Trump twice, acting as the constitutionally mandated presiding officer)
Authored the landmark 2012 opinion in *NFIB v. Sebelius* that controversially saved the Affordable Care Act (Obamacare) by classifying its individual mandate as a tax
His authorship of the 2024 presidential immunity decision sparked massive outrage from the Democratic Party and legal scholars, who accused him of placing the presidency above the rule of law and aiding Donald Trump's election evasion cases
Faced intense, sustained pressure from the Senate Judiciary Committee to impose a binding, enforceable ethics code on the Supreme Court following highly publicized financial scandals involving Justices Thomas and Alito (Roberts implemented a self-enforcing code in late 2023, widely criticized as toothless)
Angered conservative hardliners early in his tenure by voting with liberal justices to uphold the Affordable Care Act and block the Trump administration's initial attempt to end DACA
Authored *Loper Bright Enterprises v. Raimondo* (2024), officially overturning the 40-year-old Chevron deference and stripping massive regulatory power from federal agencies