Shipping Regulation Lifted for Puerto Rico: What Is the Jones Act?

In Corozal, Puerto Rico, people wait in line to fill containers with water from a natural spring on the side of the road.
(Image credit: Joe Raedle/Getty)

Today (Sept. 28), the White House authorized the temporary waiving of a shipping regulation dating to nearly a century ago, known as the Jones Act, to enable much-needed aid to reach Puerto Rico.  

Also known as the Merchant Marine Act of 1920, the Jones Act states that transportation of passengers or cargo between coastal points on U.S. soil — including districts and territories, such as Puerto Rico — is restricted to ships that were built in the United States, are U.S.-owned and fly the American flag, according to the Maritime Law Center. Recently, after hurricanes Harvey and Irma, the Department of Homeland Security (DHS) temporarily waived the statute, enabling more ships to carry fuel to affected areas in Texas and Florida, Bloomberg reported.

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Mindy Weisberger
Live Science Contributor

Mindy Weisberger is a science journalist and author of "Rise of the Zombie Bugs: The Surprising Science of Parasitic Mind-Control" (Hopkins Press). She formerly edited for Scholastic and was a channel editor and senior writer for Live Science. She has reported on general science, covering climate change, paleontology, biology and space. Mindy studied film at Columbia University; prior to LS, she produced, wrote and directed media for the American Museum of Natural History in NYC. Her videos about dinosaurs, astrophysics, biodiversity and evolution appear in museums and science centers worldwide, earning awards such as the CINE Golden Eagle and the Communicator Award of Excellence. Her writing has also appeared in Scientific American, The Washington Post, How It Works Magazine and CNN.