The Obama administration pressed BP on Wednesday for more details on how it is evaluating and paying out damages to businesses and families as a result of the oil spill.

Adm. Thad Allen, the national incident commander in charge of the response to the spill, wrote BP CEO Tony Hayward to request a wide swath of information on how the oil company has dealt with claims against it.

"We need complete, ongoing transparency into BP's claims process, including detailed information on how claims are being evaluated, how payment amounts are being calculated and how quickly claims are being processed," Allen wrote in a letter on Tuesday that was released Wednesday morning by the White House.

"To that end, I am directing that you provide the National Incident Command (NIC) and appropriate representatives of the state governments with information we need to meet our responsibilities to our citizens."

Allen asked Hayward to allow access to information as quickly as possible on how the company is processing claims online, as well as information on BP's plans to pay out claims going forward.

The Coast Guard admiral's letter comes against a backdrop in which President Barack ObamaBarack Hussein ObamaObama calls on Senate not to fill Ginsburg's vacancy until after election Senate Republicans face tough decision on replacing Ginsburg Cruz: Trump should nominate a Supreme Court justice next week MORE has warned BP against "nickel-and-diming" Gulf Coast residents whose livelihoods have been adversely affected by the oil spill.

Hayward and other BP executives have maintained from the outset that they would pay out "all legitimate claims" resulting from the spill, though lawmakers in both parties have expressed frustration regarding the ambiguity of that phrasing.

“We also have to make sure that every single person that has been affected by this is properly compensated and made whole," Obama said Tuesday on NBC's "Today" show. "I don't want them nickel-and-diming people down here."

Meanwhile, at least one lawmaker, Sen. Byron Dorgan (D-N.D.), has proposed federal rules or congressional action to legally bind BP to pay out claims.