WASHINGTON (AP) — On the defensive over the pace of federal help for Puerto Rico, President Donald Trump and congressional Republicans cleared the way Thursday for more supplies and government cash for the hurricane-ravaged U.S. island.

Trump waived federal restrictions on foreign ships delivering cargo. And House Speaker Paul Ryan said the Federal Emergency Management Agency's disaster relief account will get a $6.7 billion boost by the end of the week. Trump and his advisers, meanwhile, defended the administration's response to the devastation on the island, which was hit by Hurricane Maria Sept. 20 with many people left desperate for power, food and other supplies.

"The electric power grid in Puerto Rico is totally shot. Large numbers of generators are now on Island. Food and water on site," Trump tweeted early in the day.

The developments Thursday came after Trump came under sharp criticism for what critics said was a too-slow response to a humanitarian crisis among Puerto Rico's 3.4 million residents.

From the White House driveway to cable television, a squad of advisers defended the president's response and described the relief efforts as well underway, with most hospitals "operational."

Acting Homeland Security Secretary Elaine Duke said she signed the waiver of a federal law called the Jones Act to clear the way for foreign-flagged ships to deliver supplies between U.S. ports.