{"argument_date":"2001-02-20T00:00:00Z","arguments":[{"argument_date":"2001-02-20T00:00:00Z","heading":"What happened at the argument","official_detail_url":"https://www.supremecourt.gov/oral_arguments/argument_transcript/2000","official_transcript_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","paragraphs":["Lerner stated the case involves thermal imaging of a home without a warrant.","Lerner asserted this constitutes an impermissible search under the Fourth Amendment.","Lerner described the home as the basic refuge for all citizens.","Dreeben explained thermal imaging senses heat gradients on the exterior of a surface."],"reargument":false,"sequence":1,"sources":[{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 3, lines 5-21","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 3, lines 5-21"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 30, lines 19-27","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 30, lines 19-27"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 4, lines 33-13","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 4, lines 33-13"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 49, lines 41-39","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 49, lines 41-39"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 55, lines 21-25","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 55, lines 21-25"}]}],"caption":"Kyllo v. United States","case_history":[{"changed_at":"2026-08-29T20:06:33.336458Z","explanation":"An official oral-argument transcript was verified.","status":"argued"},{"changed_at":"2026-08-29T20:06:33.339569Z","explanation":"An official oral-argument transcript was verified.","status":"argued"}],"case_status":"argued","dek":"The dispute centers on whether warrantless thermal imaging of a residence constitutes an impermissible search.","dek_sources":[{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 30, lines 19-27","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 30, lines 19-27"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 4, lines 33-13","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 4, lines 33-13"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 49, lines 41-39","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 49, lines 41-39"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 55, lines 21-25","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 55, lines 21-25"}],"dispositions":[],"latest_court_document_date":"2001-02-20T00:00:00Z","maturity":"official_transcript","official_detail_url":"https://www.supremecourt.gov/oral_arguments/argument_transcript/2000","official_disposition_urls":[],"official_docket_url":"https://www.supremecourt.gov/docket/docketfiles/html/public/99-8508.html","primary_docket":"99-8508","revisions":[{"correction_note":"Rewritten to the concise citizen-facing editorial standard.","created_at":"2026-08-31T18:07:50.752944Z","maturity":"official_transcript","revision_number":1},{"correction_note":"Migrated to the dated official Court activity contract without model use.","created_at":"2026-09-05T03:22:24Z","maturity":"official_transcript","revision_number":2}],"schema_version":"1.1","sections":[{"heading":"What this case is about","paragraphs":["This case examines the legal status of using heat-detection technology on a home's exterior."],"sources":[{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 30, lines 19-27","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 30, lines 19-27"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 4, lines 33-13","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 4, lines 33-13"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 49, lines 41-39","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 49, lines 41-39"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 55, lines 21-25","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 55, lines 21-25"}]},{"heading":"How the case got here","paragraphs":["The Supreme Court heard oral argument in this case on February 20, 2001."],"sources":[{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 3, lines 5-21","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 3, lines 5-21"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 49, lines 41-39","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 49, lines 41-39"}]},{"heading":"What each side wants","paragraphs":["Lerner seeks a ruling that the imaging is an illegal search.","Dreeben seeks a ruling that the imaging is not a search."],"sources":[{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 30, lines 19-27","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 30, lines 19-27"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 4, lines 33-13","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 4, lines 33-13"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 49, lines 41-39","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 49, lines 41-39"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 55, lines 21-25","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 55, lines 21-25"}]},{"heading":"What each side says","paragraphs":["Lerner argues the home is a basic refuge protected by the Fourth Amendment.","Dreeben argues observing heat gradients on a surface is not a search."],"sources":[{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 30, lines 19-27","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 30, lines 19-27"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 4, lines 33-13","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 4, lines 33-13"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 49, lines 41-39","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 49, lines 41-39"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 55, lines 21-25","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 55, lines 21-25"}]},{"heading":"What the justices asked","paragraphs":["Rehnquist noted the 200th anniversary of John Marshall's swearing in."],"sources":[{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 3, lines 5-21","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 3, lines 5-21"}]},{"heading":"Why it matters","paragraphs":["The outcome defines the scope of privacy protections for residential spaces against modern surveillance tools."],"sources":[{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 30, lines 19-27","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 30, lines 19-27"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 4, lines 33-13","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 4, lines 33-13"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 49, lines 41-39","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 49, lines 41-39"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 55, lines 21-25","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 55, lines 21-25"}]},{"heading":"What happens next","paragraphs":["This article currently covers the argument record. Use the official docket link for later case activity."],"sources":[{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 3, lines 5-21","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 3, lines 5-21"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 49, lines 41-39","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 49, lines 41-39"}]}],"slug":"2000-99-8508-kyllo-v-united-states","term":"2000","title":"Does thermal imaging of a home violate the Fourth Amendment?","title_sources":[{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 30, lines 19-27","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 30, lines 19-27"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 4, lines 33-13","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 4, lines 33-13"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 49, lines 41-39","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 49, lines 41-39"},{"evidence_type":"Transcript","label":"Official Supreme Court Transcript — file page 55, lines 21-25","official_url":"https://www.supremecourt.gov/pdfs/transcripts/2000/99-8508.pdf","page_label":"file page 55, lines 21-25"}],"topics":[],"undated_disposition_date_fallback":null,"updated_at":"2026-09-05T03:22:24Z"}