South Dakota v. Wayfair, Inc.’s Empirical Analysis
2018
Citation profile
8 federal appellate · 4 district · 39 state decisions
How this case has been cited
Cited by 92 later decisions (8 by the Supreme Court) — most recently June 2026 · most notably Knick v. Township Of Scott (2019), Loper Bright Enterprises v. Raimondo (2024)
8 federal appellate · 4 district · 39 state decisions — followed in 14 states
Later decisions citing this case, by decade. The current decade is in progress, and our corpus holds fewer opinions from the most recent years, so the latest bars are undercounted — not a real decline.
Relationships
Relies on Burger King Corporation v. Rudzewicz · Pearson v. Callahan · United States v. Ross · Patterson v. McLean Credit Union · Pike v. Bruce Church, Inc.
Most-quoted passages
The sentences later courts lift from this opinion, ranked by how many decisions quote each — the parts of the opinion doing the work. These counts are smaller than the citation total above because most of the 92 citing decisions cite the case generally; a passage count includes only decisions quoting that exact language verbatim.
“First, state regulations may not discriminate against interstate commerce; and second, States may not impose undue burdens on interstate commerce.”
5 later decisions quote this exact passage · from the majority“regulates even-handedly to effectuate a legitimate local public interest, and its effects on interstate commerce are only incidental, it will be upheld unless the burden imposed on such commerce is clearly excessive in relation to the putative local benefits”
3 later decisions quote this exact passage · from the majority“(1) appl[y] to an activity with a substantial nexus with the taxing State, (2) [be] fairly apportioned, (3) [ ] not discriminate against interstate commerce, and (4) [be] fairly related to the services the State provides.”
3 later decisions quote this exact passage · from the majority
How this case has been treated — in progress
Whether each later court followed, distinguished, criticized, or overruled this decision. The treatment classification (task #35) runs highest-cited cases first and lights up here as it reaches this one.