Your AP Government or Constitutional Law exam has a landmark cases section, and Obergefell v. Hodges is always on the list — but the actual opinion runs long, tangled with dissents, and full of legal terms nobody defined for you. This guide breaks down the 2015 Supreme Court decision that made same-sex marriage a constitutional right, without the bloat of a full casebook.

You'll get the full story in plain language: the core holding and why it mattered, the legal road from the 1972 dismissal in Baker v. Nelson through DOMA, Lawrence v. Texas, and United States v. Windsor, and the real plaintiffs whose cases reached the Sixth Circuit before landing at the Supreme Court. Then it walks through Justice Kennedy's majority opinion — the four principles that justify marriage as a fundamental right, and how due process and equal protection work together — followed by a clear breakdown of the four separate dissents from Roberts, Scalia, Thomas, and Alito. A final section covers what happened next: Masterpiece Cakeshop, the 2022 Respect for Marriage Act, and Justice Thomas's Dobbs concurrence questioning whether Obergefell itself is still safe.

This is a study guide for students who need to walk into a test or classroom discussion actually understanding the reasoning, not just the outcome. It's concise, organized around what you'll actually be asked, and written so the legal reasoning makes sense on first read — no law degree required. Parents helping with homework and tutors prepping a session will find it just as useful.

Skip the multi-chapter detour through a constitutional law textbook. Get oriented, get the reasoning straight, and get back to studying.

• Explain the constitutional questions the Court decided in Obergefell v. Hodges
• Trace the legal path from Baker v. Nelson through Windsor to Obergefell
• Summarize Justice Kennedy's majority opinion and the four dissents
• Identify how the Due Process and Equal Protection Clauses were applied
• Understand the decision's legal, political, and social aftermath

1. 1. What Obergefell Decided and Why It Mattered
   Orients the reader to the core holding of the case, the plaintiffs, and the constitutional stakes.
2. 2. The Road to the Court: From Baker to Windsor
   Traces the legal history of marriage cases from the 1972 dismissal in Baker v. Nelson through DOMA, Lawrence v. Texas, and United States v. Windsor.
3. 3. The Plaintiffs and the Path Through the Sixth Circuit
   Tells the human stories behind the consolidated cases and explains how the Sixth Circuit's outlier ruling forced the Supreme Court to act.
4. 4. Kennedy's Majority Opinion: Due Process and Equal Protection
   Unpacks the legal reasoning of the majority, including the four principles justifying marriage as a fundamental right and the interplay of two Fourteenth Amendment clauses.
5. 5. The Dissents: Roberts, Scalia, Thomas, and Alito
   Explains the four separate dissenting opinions and their arguments about democracy, judicial overreach, and the meaning of liberty.
6. 6. Aftermath: Respect for Marriage Act and Ongoing Debates
   Covers the implementation of the ruling, subsequent cases like Masterpiece Cakeshop, the 2022 Respect for Marriage Act, and Justice Thomas's Dobbs concurrence questioning Obergefell.