Ms. Mlinar paid to ship two oil paintings to New York. When the container arrived, it was empty. She sued UPS and others, alleging a scheme designed to profit from the sale of goods stolen during the shipping process. UPS argued that a provision of federal law in place for more than a century shielded it from Ms. Mlinar’s suit. The trial court agreed and dismissed the suit. The Fourth District Court of Appeal upheld that decision but certified some conflict with a decision by the Fifth District Court of Appeal.