4 canonical passages across 3 cases, quoted by 37 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 John W. Schoettmer & Karen Schoettmer v. Jolene C. Wright & South Central Community Action Program, Inc..
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.