6 canonical passages across 3 cases, quoted by 55 opinions in total. These passages cluster together because the same opinions keep quoting them side by side — they state parts of one doctrine. The anchor passage is from Moore v. Sims.
| # | Case | Flag | Canonical passage | Citers |
|---|---|---|---|---|
| 1 | Moore v. Sims Anchor | green | “family relations are a traditional area of state concern.” | 20 |
| 2 | De Sylva v. Ballentine | green | “here is no federal law of domestic relations, which is primarily a matter of state concern.” | 11 |
| 3 | Moore v. Sims | green | “family relations are a traditional area of state concern” | 10 |
| 4 | Mansell v. Mansell | green | “omestic relations are preeminently matters of state law” | 6 |
| 5 | Mansell v. Mansell | green | “because domestic relations are preeminently matters of state law, we have consistently recognized that congress, when it passes general legislation, rarely intends to displace state authority in this area.” | 5 |
| 6 | Mansell v. Mansell | green | “omestic relations are preeminently matters of state law.” | 3 |
A red or yellow flag on a member means the underlying case has negative treatment — for those, check the case page before relying on the passage.