They're asking for a pre-trial hearing where prosecutors would have to prove that they did not use evidence from independent counsel Kenneth Starr's grand jury probe in their investigation of Tripp.
Tripp's lawyers claim the wiretap case is tainted with statements she gave to Starr under immunity from prosecution. They're calling the Lewinsky scandal a "political nuclear explosion" with Washington as "ground zero."
Prosecutors say they'll prove Tripp taped her now-infamous conversations with Monica Lewinsky after she knew it was against Maryland law.
They say any hearing on the evidence should come after the January trial.