charged that by asserting executive privilege over certain documents, the White House essentially admitted it had been involved in a cover-up.

"The decision to invoke executive privilege is an admission that White House officials were involved in decisions that misled the Congress and have covered up the truth," Boehner told reporters.

Fox News host Chris Wallace on Sunday asked Oversight Committee Chairman Darrel Issa (R-CA) if he had any evidence to support Boehner's claim.

"No, we don't," Issa admitted. "And what we are seeking are documents that we know to exist, February 4 to December [2011] that are in fact about [Border Patrol agent] Brian Terry’s murder -- who knew, and why people were lying about it."

"No evidence at this point that the White House is involved in a cover up?" Wallace pressed.

"And I hope that they don't get involved," Issa replied.

(h/t: Think Progress)