{"data":{"id":"us/42-cfr-71.31","jurisdiction":"us","citation":"42 CFR 71.31","heading":"General provisions.","body":"(a) Upon arrival at a U.S. port, a carrier will not undergo inspection unless the Director determines that a failure to inspect will present a threat of introduction of communicable diseases into the United States, as may exist when the carrier has on board individual(s) reportable in accordance with § 71.21 or meets the circumstances described in § 71.42. Carriers not subject to inspection under this section will be subject to sanitary inspection under § 71.41 of this part.\n(b) The Director may require detention of a carrier until the completion of the measures outlined in this part that are necessary to prevent the introduction or spread of a communicable disease. The Director may issue a controlled free pratique to the carrier stipulating what measures are to be met, but such issuance does not prevent the periodic boarding of a carrier and the inspection of persons and records to verify that the conditions have been met for granting the pratique.","path":["Title 42—Public Health","CHAPTER I—PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER F—QUARANTINE, INSPECTION, LICENSING","PART 71—FOREIGN QUARANTINE","Subpart D—Health Measures at U.S. Ports: Communicable Diseases"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-42.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:11Z","sha256":"15d8743e3fd7ae806b90ce2d75cdddc3b32fada03f1ad7640449773f5e69d61f","source_id":"us-cfr","stale":true,"prev":"us/42-cfr-71.30","next":"us/42-cfr-71.32"},"notice":"GroundRules: Original legal text. Not legal advice."}