Washington (CNN) -- A letter sent to President Barack Obama will outline why his invocation of executive privilege over documents sought by lawmakers investigating the botched Fast and Furious gun-running sting is either "overbroad, or simply wrong," House Oversight Committee chairman Darrell Issa said Sunday.
The letter will be sent later Sunday or Monday, Issa, R-California, told ABC's "This Week." The oversight committee voted Wednesday to refer a potential contempt citation against Attorney General Eric Holder to the full House, which is set to vote this week.
"We're past that part of the discovery, relative to contempt, Issa said. "We know that there's a lot of wrong things and we want to fix it. What we're talking about now, when we get lied to, when the American people get lied to, there can't be oversight when there's lying.
"The Supreme Court held pretty clearly there cannot be executive privilege over a criminal cover-up," he said. "... Lying to Congress is a crime. We have every right to see documents to say, 'Did you know?' 'What did you know?' including even the president."