WASHINGTON -- Congress doesn't have any evidence so far of a White House cover-up involving a botched gun-tracking operation, a top Republican said Sunday, countering the House speaker's assertion that President Barack Obama or his aides deliberately misled lawmakers.

"No we don't," Rep. Darrell Issa (R-Calif.) said in response to a question on "Fox News Sunday" about whether lawmakers had proof now to back Speaker John Boehner's claim about White House officials' involvement.

"And I hope they don't get involved. I hope this stays at Justice," said Issa, chairman of the House Oversight and Government Reform Committee.

The Republican-led committee voted along party lines on Wednesday to cite Attorney General Eric Holder for contempt of Congress for not handing over all the material demanded in connection to Operation Fast and Furious.

Earlier that day, Obama had invoked executive privilege to withhold the documents, which concern how the department learned there were problems with an Arizona probe of gunrunning into Mexico.

Boehner (R-Ohio) has said the full House would vote on the matter this week unless there was some resolution in the meantime. He also said that Obama's claim of executive privilege was "an admission the White House officials were involved in the decision that misled the Congress and covered up the truth."

Issa made clear Sunday his inquiry has focused, for now, on the Justice Department. "If we can have those documents, we can postpone or cancel the contempt."

The committee's top Democrat, Rep. Elijah Cummings of Maryland, said he thought the two sides could reach an agreement before the House vote.

During the committee's year-and-a-half-long investigation, the department has turned over 7,600 documents about the Fast and Furious operation. The Justice Department initially told the panel that it did not use "gun-walking," a risky investigative technique aimed at tracking weapons to high-level arms traffickers.

Two of the guns that "walked" in the operation were found at the scene of the slaying of a U.S. border agent.

NewsdayTV's Doug Geed visits two wineries and a fish market, and then it's time for holiday cheer, with a visit to a bakery and poinsettia greenhouses. Credit: Randee Dadonna

Out East with Doug Geed: Wine harvests, a fish market, baked treats and poinsettias NewsdayTV's Doug Geed visits two wineries and a fish market, and then it's time for holiday cheer, with a visit to a bakery and poinsettia greenhouses.

NewsdayTV's Doug Geed visits two wineries and a fish market, and then it's time for holiday cheer, with a visit to a bakery and poinsettia greenhouses. Credit: Randee Dadonna

Out East with Doug Geed: Wine harvests, a fish market, baked treats and poinsettias NewsdayTV's Doug Geed visits two wineries and a fish market, and then it's time for holiday cheer, with a visit to a bakery and poinsettia greenhouses.

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