Acting Department of Homeland Security Secretary Elaine Duke said the waiver will be in effect for 10 days and will cover all products being shipped to Puerto Rico, according to a release from the department.
The Jones Act is a century-old law that requires all goods shipped between US ports be carried on USA owned-and-operated ships and has been central to the criticism around the pace of the response to the crisis in Puerto Rico.
"The largest bottleneck is not getting goods to the island, but delivering goods once they arrive", Mr Allegretti added.
Iran unveils new long-range ballistic missile
Criticism by the Trump administration of the 2015 nuclear deal has focused heavily on Tehran's continuing missile program. The missile is named Khorramshahr after the Iranian city where the first major engagement of the war occurred.
House Speaker Paul Ryan says federal disaster relief accounts will get a boost of almost $7 billion dollars by the end of the week to help hurricane-ravaged Puerto Rico.
The most powerful hurricane to hit Puerto Rico in almost 90 years, Maria swept across the island last Wednesday.
White House Press Secretary Sarah Sanders announced the waiver of Jones Act, which is meant to expedite the delivery of needed relief supplies to Puerto Rico, in a tweet on Thursday morning.
Trump faced mounting calls to freeze the 97-year-old act, which requires products shipped between US ports to be moved by American-owned ships.
Puerto Rico Gov. Ricardo Rossello said he petitioned the White House on Wednesday night to temporarily lift the ban.
US Supreme Court cancels arguments on previous Trump travel ban
In addition, he said that the list was created to advance foreign policy, national security and counterterrorism objectives. Last week, Kim called Trump a "mentally deranged US dotard" in response to Trump's threats to "totally destroy" the North .
Waiving restrictions on foreign vessels that carry cargo to Puerto Rico "could overwhelm the system, creating unnecessary backlogs and causing confusion on the distribution of critical supplies throughout the island,"' said Thomas Allegretti, the group's chairman. Critics have called the act anachronistic and argue that it is stalling recovery efforts in the badly damaged island territory that was hit by two massive storms in quick succession this month.
Here's what you need to know about the Jones Act.
In Washington, the Transportation Department on Thursday made $40 million in "quick release" Emergency Relief funds to help restore essential service on roads and bridges damaged by Maria throughout Puerto Rico.
Reports of isolated USA citizens struggling in the heat without electricity and running low on food and water have now spurred the Pentagon to throw resources into the relief effort even though they haven't been specifically requested by territorial officials. That means goods going from the mainland to Puerto Rico, Hawaii, Alaska and Guam, or even from Texas to New England, have to travel on US ships, even if they're not the most economical transport or readily available.
Republican Senators Oppose Graham-Cassidy
The measure would end the Affordable Care Act's requirements that individuals have insurance and that most employers provide it. One analysis estimates that ME would lose $1 billion in federal funding over the next decade if Graham-Cassidy became law.