(CNN) - More than 24 hours after Army Sgt. Bowe Bergdahl's release, Rep. Buck McKeon, chairman of the Armed Services Committee, said he still has not been briefed by administration officials on the swap.
The California Republican plans to hold hearings about the Bergdahl exchange, he told CNN Chief Congressional Correspondent Dana Bash on Sunday.
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"We're getting our information - other than a very brief notification–we're getting most of our information now from the media," he said in an exclusive interview on “Newsroom.”
Bergdahl, who had been held by Afghan militants for the past five years, was handed over to U.S. control Saturday in a prisoner swap brokered by Qatar that included the release of five detainees from Guantanamo Bay.
McKeon said his staff was notified by the Defense Department Saturday after the exchange took place, but he pointed to a law that requires the administration to notify Congress 30 days before detainees are released from the facilities at Guantanamo Bay.
"They're not following the law. They know they're not following the law," he said. "It's been a day now, and they still haven't told us details."
When President Barack Obama signed the law in December, he added a "signing statement" to the bill, meaning he would override restrictions - such as the 30-day notification - if he felt that such action fell within his constitutional authority as President.
Such signing statements have been used by previous presidents, including George W. Bush and Bill Clinton.
White House National Security Adviser Susan Rice said Sunday that the "acute urgency" of Bergdahl's declining health justified the administration's decision to execute the swap without telling Congress.
"It was determined that it was necessary and appropriate not to adhere to the 30-day notification requirement, because it would have potentially meant that the opportunity to get Sgt. Bergdahl would have been lost," she said on CNN's "State of the Union with Candy Crowley."
McKeon, like other members of Congress have said this weekend, wants more details on the assurances given to the United States that the detainees will not fight Americans again.
"These five guys are all known to have had - most of them, if not all of them, because we haven't received the information that we should have received - have blood on their hands. American blood," McKeon said. "To think that they would not re-enter the fight is ludicrous."
McKeon said the latest development marks another dent in the relationship between the White House and Congress.
"I just think their credibility in Congress and in the nation – -and around the world - is slipping greatly," he said.