Zap v. United States’s Empirical Analysis
328 U.S. 624 · 1946
Citation profile
212 federal appellate · 36 district · 324 state decisions
How this case has been cited
Cited by 715 later decisions (44 by the Supreme Court) — most recently November 2019 · most notably Katz v. United States (1967), Schneckloth v. Bustamonte (1973)
212 federal appellate · 36 district · 324 state decisions — followed in 39 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.
Appellate journey
reviewedZap v. United States (from Ninth Circuit Court of Appeals)
Relationships
Applies 18 U.S.C. § 612
Relies on Weeks v. United States · Silverthorne Lumber Co. v. United States · Marron v. United States · SGRO v. United States · Nathanson v. United States
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 715 citing decisions cite the case generally; a passage count includes only decisions quoting that exact language verbatim.
““. . . the law of searches and seizures as revealed in the decisions of this Court is the product of the interplay of the Fourth and Fifth Amendments. But those rights may be waived. . . .” (p. 628.) (Emphasis added.)”
7 later decisions quote this exact passage · from the majority“The agents ... obtained by lawful means access to the [incriminating] documents.... They did not obtain access by force, fraud, or trickery.”
2 later decisions quote this exact passage · from the majority“[t]he accounts and records of the contractor shall be open at all times to the Government and its representatives.”
2 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.