The National Guard on Dauphin Island, Ala., is fighting a war against the oil. The guard installed a series of porous boxes along the shore. Crews will dump chemicals that solidify the oil when it washes up against the barrier and catches it so it can then be lifted from the boxes.
"There's nothing else we can do to stop this enemy than do what we are doing," Capt. Marcus Young said.
In Gulf Shores, Ala., officials have used a simpler approach by building a four-foot wall of sand to stop the water from washing over into the Bay.
BP executives promised to clean up the oil spill polluting the Gulf of Mexico but tried to shift responsibility for the accident to another company Monday.
The Obama administration has "our boot on the throat of BP to ensure that they're doing all that is necessary while we do all that is humanly possible to deal with this incident," White House spokesman Robert Gibbs said Monday.
Gibbs was echoing statements Obama made Monday on a visit to the gulf region.
"Let me be clear, BP is responsible for this leak. BP will be paying for the bill," Obama said.
Gibbs was clear about the president's expectations Monday.
"I think the president will be pleased when there's no more oil leaking on the floor of the ocean," he said.
Earlier in the day, BP's Hayward reiterated his company's dedication to clean up the spill, but said that the explosion was the fault of the owners of the deep-sea rig.
"The drilling rig was Transocean's drilling rig, it was their equipment that failed, it's their systems, their processors that were running it," Hayward said.
"We are responsible not for the accident, but we are responsible for the oil and for dealing with it and cleaning the situation up," Hayward said on "Good Morning America" Monday.
For its part, Transocean declined to take or assign blame for the accident at its Deepwater Horizon rig.
"We will await all the facts before drawing conclusions and we will not speculate," Transocean spokesman Guy Cantwell said in a statement read to The Associated Press.
BP was criticized Monday for asking fishermen it hired to help with the cleanup to sign waivers that would limit the company's liability.
"I'm looking into that right now," Napolitano said Monday. "I was just alerted to that and if that in fact is the case, that is a practice we want stopped immediately."
Shortly after, Hayward said the company had already put a stop to the practice.
"That was an early misstep," Hayward said. "We were using a standard contract. We've eliminated that."
Lighter winds did give response crews some reason for hope, though. The strong winds that whipped up seas over the weekend have dissipated for now, meaning that oil containment tools such as booms could be more effective. The lighter wind could keep the bulk of the oil slick from hitting shore for another couple days.
The spill threatens four gulf states and hundreds of miles of sensitive coast line.
So far, crews have found relatively few animals affected by the spill. An oil-soaked bird was discovered in Louisiana last week.