By Robin Respaut and Scott DiSavino
SAN JUAN, Puerto Rico/NEW YORK (Reuters) - As Puerto Rico struggles with a lack of fuel, water and medical supplies following the devastation of Hurricane Maria, it is pressing the Trump administration to lift a bar on foreign ships delivering supplies from the U.S. mainland.
The island's governor is pushing for the federal government to temporarily waive the Jones Act, a law requiring that all goods shipped between U.S. ports be carried by U.S. owned-and-operated ships. The Trump administration has so far not granted this, saying it is evaluating the issue.
Many of the U.S. territory's 3.4 million inhabitants are queuing for scarce supplies of gas and diesel to run generators as the island's electrical grid remains crippled a week after Maria hit. Government-supplied water trucks have been mobbed.
Puerto Rico gets most of its fuel by ship from the United States, but one of its two main ports is closed and the other is operating only during the daytime.
"We expect them to waive it (the Jones Act)," Governor Ricardo Rossello told CNN on Wednesday, noting there was a brief waiver issued after Hurricane Irma, which was much less devastating as it grazed past the island en route for Florida earlier this month.
Members of Congress from both parties have supported an emergency waiver, he said.
The U.S. government has issued periodic Jones Act waivers following severe storms in the past, to allow the use of cheaper or more readily available foreign-flagged ships.
The U.S. Department of Homeland Security, which waived the law after Irma and after Hurricane Harvey hit Texas in August, said on Wednesday it was considering a request by members of Congress for a waiver, but had not received any formal requests from shippers or other branches of the federal government.
"We are considering the underlying issues and are evaluating whether a waiver should be issued," a senior DHS official told reporters in a teleconference.
On Monday, several members of the U.S. House of Representatives had asked the DHS to waive the act for a year to help relief efforts. The official said a request from a member of Congress was not the usual pathway for waiver requests.
While the Trump administration has not formally denied the request, the DHS suggested earlier this week a waiver was not needed.
Gregory Moore, a spokesman for Customs and Border Protection, an office of Homeland Security, said in a statement on Tuesday that an agency assessment showed there was "sufficient capacity" of U.S.-flagged vessels to move commodities to Puerto Rico.
"The limitation is going to be port capacity to offload and transit, not vessel availability," he said.
LACK OF WATER, FUEL
Maria, the most powerful storm to hit Puerto Rico in nearly 90 years, caused widespread flooding and damage to homes and infrastructure.
Residents are scrambling to find clean water, with experts concerned about a looming public health crisis posed by the damaged water system.
On Tuesday, hundreds of people crowded around a government water tanker in the northeastern municipality of Canovanas with containers of every size and shape after a wait that for many had lasted days.
Some residents also waited hours for gasoline and diesel to fuel their automobile tanks and power generators to light their homes.
U.S. Air Force Colonel Michael Valle, on hand for relief efforts in San Juan, said he was most concerned about "the level of desperation" that could arise if fuel distribution did not return to normal within a couple of weeks.
In Washington, Republican leaders who control both chambers of Congress have said they are prepared to boost disaster funding, but are waiting for a detailed request from the Trump administration.
It could take a couple of weeks for the administration to make that request, an aide to the House Appropriations Committee said on Tuesday.
In the meantime, the administration still has $5 billion in aid in a disaster relief fund, and Congress has also approved about $7 billion more that will become available on Oct. 1, the aide said.
White House budget director Mick Mulvaney told reporters on Tuesday that Congress has appropriated enough money to cover disaster costs to last until mid-October.
(Reporting by Robin Respaut in San Juan, Puerto Rico and Scott DiSavino in New York; Additional reporting by Doina Chiacu, Richard Cowan and Timothy Gardner in Washington and Ann Saphir in Cleveland; Writing by Bill Rigby; Editing by Frances Kerry)