SPRINGFIELD, Ill. (AP) — Gov. Rod Blagojevich’s attorney is offering a glimpse of his client’s unfolding legal strategy, saying he’ll challenge the lawfulness of court-ordered wiretaps at the heart of federal corruption allegations against the Democrat. But the two-term governor may go public to defend himself first.

With Blagojevich saying he’s itching to talk, perhaps as early as Friday, Chicago attorney Ed Genson continued bashing what’s gotten his client in a legal bind: FBI wiretaps that prosecutors say catch Blagojevich scheming to deal President-elect Barack Obama’s vacant Senate seat for campaign cash or a plum job.

Genson told an Illinois House panel considering whether to impeach Blagojevich that its consideration of the recorded excerpts he cast as meaningless “jabbering” was inappropriate, if not illegal. “I think you’re using evidence that was illegally obtained,” he said Thursday.

After the committee recessed its hearing until next week, Genson told reporters he planned to go after the taped conversations in court at some point.

Members of the House panel pledged Thursday to do nothing that would interfere with the investigation by U.S. Attorney Patrick Fitzgerald. If Fitzgerald asks lawmakers not to interview certain witnesses, the panelists will abide by that, they said.