Obergefell v. Hodges (2015) is the Supreme Court decision that legalized same-sex marriage nationwide, ruling that state bans violated the 14th Amendment's Due Process and Equal Protection Clauses. In AP Gov, it's a Topic 4.10 illustrative example of how ideology shapes social policy.
Obergefell v. Hodges (2015) is the Supreme Court case that struck down state bans on same-sex marriage, holding that the 14th Amendment's Due Process and Equal Protection Clauses guarantee same-sex couples the fundamental right to marry. Before the ruling, marriage law was a patchwork. Some states recognized same-sex marriage, others banned it, and your legal status could change when you crossed a state line. Obergefell ended that by making one national rule.
In the AP Gov CED, Obergefell appears in Topic 4.10 (Ideology and Social Policy) as an illustrative example of "differing state requirements for marriage" being resolved by a national-level decision. That framing is the point. The case isn't just about marriage; it's about which level of government gets to decide a social issue. A liberal ideological view generally welcomes national action to guarantee rights uniformly, while a conservative view generally argues that social issues like marriage belong to the states. Obergefell is the moment the national government (here, the Court) took the question away from the states.
Obergefell lives in Unit 4 (American Political Ideologies and Beliefs) under Topic 4.10, supporting AP Gov 4.10.A (explain how ideologies vary on the role of government in addressing social issues) and AP Gov 4.10.B (explain how different ideologies affect policy on social issues). The CED lists it alongside Planned Parenthood v. Casey and Zelman v. Simmons-Harris as a case where ideological battles over social policy got litigated. The exam-relevant move is connecting the case to ideology and federalism, not reciting the facts. When you see Obergefell on the exam, the question is almost always really asking about national versus state authority over social issues, and which ideology favors which answer.
Keep studying AP® Gov Unit 4
Planned Parenthood v. Casey (Unit 4)
Casey is Obergefell's closest CED neighbor. Both are Topic 4.10 illustrative examples where the Court, using the 14th Amendment, set limits on how far states can go in regulating a contested social issue. Together they show that social policy fights often end up in court, not just in legislatures.
Federalism and state policy differences (Unit 1)
Before 2015, marriage was a textbook federalism story. States set their own rules, so policy varied across the map. Obergefell shows what happens when a national constitutional ruling overrides that state-by-state variation, which is exactly the tension Unit 1 teaches.
The 14th Amendment and civil rights (Unit 3)
Obergefell's legal engine is the same one behind the Unit 3 civil rights story. The Court relied on the Due Process and Equal Protection Clauses, the same clauses that powered desegregation and selective incorporation. If you can explain why the 14th Amendment binds the states, you can explain why Obergefell binds all 50 of them.
Liberal ideology and national government action (Unit 4)
Obergefell is the cleanest example of the liberal preference in 4.10.A. Liberals generally favor more national involvement on social issues so rights don't depend on your zip code, and a nationwide marriage ruling is that preference made real.
Obergefell is not one of the 15 required Supreme Court cases, so you won't be asked to brief it in a SCOTUS comparison FRQ. It shows up as an illustrative example, mostly in multiple choice. Stems typically ask one of three things. First, what the ruling did (legalized same-sex marriage nationwide). Second, which constitutional principle it relied on (the 14th Amendment's Due Process and Equal Protection Clauses). Third, and most often, what it represents ideologically, like a question asking how a post-Obergefell federal anti-discrimination proposal reflects liberal views on national government involvement in social issues. The skill being tested is mapping the case onto the liberal-conservative split over which level of government should handle social policy. No released FRQ has required this case by name, but it makes a strong self-supplied example in an Argument Essay about federalism or ideology and social policy.
Both are 4.10 illustrative examples of courts shaping social policy through the 14th Amendment, so they blur together. Casey is about abortion. It upheld a constitutional right to abortion while letting states regulate it as long as they didn't impose an "undue burden." Obergefell is about marriage, and it left states no room at all. After Obergefell, no state can ban same-sex marriage. Casey split the difference between national rights and state regulation; Obergefell nationalized the whole question.
Obergefell v. Hodges (2015) legalized same-sex marriage in all 50 states by striking down state bans.
The Court based the ruling on the 14th Amendment, specifically the Due Process and Equal Protection Clauses.
In AP Gov, Obergefell is a Topic 4.10 illustrative example of how ideology affects social policy, supporting learning objectives 4.10.A and 4.10.B.
The case illustrates the liberal preference for national government action on social issues and the conservative preference for leaving those issues to the states.
Obergefell is also a federalism story, since it replaced differing state marriage requirements with one uniform national rule.
It is not one of the 15 required Supreme Court cases, so expect it in multiple choice or as an example you bring into an Argument Essay, not in the SCOTUS comparison FRQ.
In 2015, the Supreme Court ruled 5-4 that same-sex couples have a fundamental right to marry under the 14th Amendment's Due Process and Equal Protection Clauses. The decision struck down every remaining state ban and made same-sex marriage legal nationwide.
No. It's not one of the 15 required Supreme Court cases. The CED lists it as an illustrative example in Topic 4.10 (Ideology and Social Policy), so you should know what it held and what it shows about ideology and federalism, but you won't be required to compare it to a required case on the FRQ.
The 14th Amendment. The Court held that marriage is a fundamental liberty protected by the Due Process Clause and that denying it to same-sex couples violated the Equal Protection Clause. AP multiple-choice questions ask this directly.
Both are Topic 4.10 examples of courts shaping social policy through the 14th Amendment, but Casey (1992) dealt with abortion and let states regulate it short of an "undue burden," while Obergefell (2015) dealt with marriage and left states no power to ban same-sex marriage at all.
Because the CED uses it to show how ideology affects social policy. Before 2015, marriage requirements differed by state, which fit the conservative preference for state control of social issues. The nationwide ruling reflects the liberal preference for uniform national protection of rights, which is exactly what 4.10.A and 4.10.B ask you to explain.
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