A request to temporarily waive the Jones Act for Puerto Rico that was denied on Monday has been approved. President Donald Trump waived shipping restrictions on Thursday to help speed up fuel and supply deliveries to Puerto Rico, devastated by Hurricane Maria, the White House said.

Maria wiped out power on the island and destroyed infrastructure and cell towers, leading to massive shortages. Even though a waiver had been granted to Texas and Florida after Hurricanes Harvey and Irma, the Department of Homeland Security initially said there was no need to waive the restriction for Puerto Rico, as it would not address the issue of the island’s damaged ports.

The Jones Act, or the Merchant Marine Act of 1920, was initiated almost 100 years ago to keep foreign-flagged vessels from shipping fuel and goods between U.S. ports. The last previous waiver was in December 2012 to allow petroleum products to be delivered for relief assistance after Hurricane Sandy.

Sen. John McCain, R-Ariz., disagreed with the initial decision to deny suspension of the act for Puerto Rico. He wrote to the Department of Homeland Security urging it to allow a waiver and ultimately “a full repeal of this archaic and burdensome act.” Without the waiver, McCain said residents of Puerto Rico would end up paying at least twice as much for food, drinking water and other supplies.

Supporters of the Jones Act, including ship builders, have maintained that it supports American jobs, including jobs in Puerto Rico and keeps shipping routes reliable, according to Reuters. They also contend that the issue in Puerto Rico is distributing shipments across the island once they are delivered.

The temporary waiver was not a surprise, as Puerto Rico Gov. Ricardo Rossello said on Wednesday that he expected the federal government to suspend the Jones Act. He said he had been speaking with members of Congress from both parties who supported an emergency waiver.