The full House could vote this week on a resolution to hold Attorney General Eric Holder in contempt of Congress for not handing over documents related to the Operation Fast and Furious probe.
Last week, members of the House Oversight and Government Reform Committee voted along party lines to cite Holder.
The vote followed a more than year-long investigation that revealed federal agents lost track of hundreds of weapons in the so-called 2010 'gun-walking' operation. Two of those guns were found at the scene of U.S. border agent Brian Terry's murder.
Rep. Darrell Issa, who chairs the House Oversight Committee, appeared on Sunday morning new programs to talk about the investigation.
"You can't play liar's poker when you're looking for who killed somebody, when you're looking into this kind of a crime, and when you're looking into the cover-up," Issa told ABC News' "This Week."
Rep. Elijah Cummings, D-Md., saw the matter differently.
"I'm really kind of saddened that at this point in the history of the Congress, that we would be finding this attorney general in contempt," he told "Fox News Sunday."
"I am calling on Speaker Boehner to come forth and show strong leadership, and I know he will, and sit down with the attorney general to resolve this matter," he said.
Meanwhile, President Obama has invoked executive privilege to withhold the documents.
House Speaker John Boehner called the president's move "an admission the White House officials were involved in the decision that misled the Congress and covered up the truth."