Wardair Canada Inc. v. Florida Department of Revenue’s Empirical Analysis
1986
Citation profile
80 federal appellate · 289 district · 122 state decisions
How this case has been cited
Cited by 577 later decisions (20 by the Supreme Court) — most recently February 2025 · most notably Oklahoma Tax Commission v. Jefferson Lines, Inc. (1995), Camps Newfound/Owatonna, Inc. v. Town of Harrison (1997)
80 federal appellate · 289 district · 122 state decisions — followed in 23 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 Pacific Gas & Electric Co. v. State Energy Resources Conservation & Development Commission · Silkwood v. Corporation · Louisiana Public Service Commission v. Federal Communications Commission · Complete Auto Transit, Inc. v. Brady · Hughes v. Oklahoma
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 577 citing decisions cite the case generally; a passage count includes only decisions quoting that exact language verbatim.
“Although the [Commerce Clause] grants Congress power to regulate commerce 'with foreign Nations' and 'among the several States' in parallel phrases, there is evidence that the Founders intended the scope of the foreign commerce power to be the greater.”
4 later decisions quote this exact passage · from the dissent“the people of the United States act through a single government with unified and adequate national power.”
4 later decisions quote this exact passage · from the majority“preven[t] the Federal Government from 'speaking with one voice' in international trade”
4 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.