[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/images/05/21/art.pelosi.gi.jpg caption="Republicans say they will introduce a resolution calling for an investigation into Pelosi."](CNN) - A member of the House Republican Conference will offer a resolution on the House floor Thursday calling for a bipartisan investigation into House Speaker Nancy Pelosi's claim that the CIA misled her on the use of waterboarding, two Republican sources tell CNN.
"The speaker has had a full week now to either produce the evidence or retract and apologize, and she's done neither," a senior Republican aide told CNN. "There is no choice now. A bipartisan investigation is needed to get to the facts."
Earlier: Gingrich says time for Pelosi to resign
Since House Republicans don't have the votes, this resolution will likely be voted down by House Democrats. Once the resolution is offered, the House has two legislative days to take it up, and a vote could be pushed until after the Memorial Day break.