Hurricane Maria
According to the United States Department of Homeland Security on Monday, Puerto Rico's exemption from the Jones Act, which temporarily lifted the rule requiring that only U.S.-owned ships might carry goods between U.S. ports, was allowed to expire on Sunday rather than being renewed. The island commonwealth had been given a temporary exemption from this law to allow foreign ships to aid the delivery of relief supplies after 
, which struck Puerto Rico last month. Puerto Ricans and lawmakers had asked for an extension of the waiver in light of the island's current difficulties.
As shipping exemption expires, hurricane-torn Puerto Rico may face changes in relief from mainland United States