THE JONES ACT SHOULD HAVE BEEN REPEALED DECADES AGO: Trump’s War With Iran Pushed Him To Waive a Century-Old Shipping Law. Commerce Boomed. “America is one of the world’s leading producers and exporters of propane, but the lack of Jones Act–compliant ships capable of carrying gas means that it has been nearly impossible to ship propane from the mainland to outlying parts of the country. In the past, Puerto Rico has imported gas from Nigeria, Chile, and elsewhere because those deliveries don’t have to comply with the Jones Act.”