42 C.F.R. § 71.48 Carriers in intercoastal and interstate traffic.
Title 42 - Public Health
Carriers, on an international voyage, which are in traffic between U.S. ports, shall be subject to inspection as described in §§71.31 and 71.41 when there occurs on board, among passengers or crew, any death, or any ill person, or when illness is suspected to be caused by insanitary conditions.
Title 42: Public Health
PART 71—FOREIGN QUARANTINE
Subpart E—Requirements Upon Arrival at U.S. Ports: Sanitary Inspection
§ 71.48 Carriers in intercoastal and interstate traffic.

