Chief Justice William H. Rehnquist (search), who suffers from thyroid cancer, checked out of the hospital Thursday after staying two nights to have a fever monitored.

As President Bush weighs filling the Supreme Court vacancy, we'll talk with two Senators whose votes are key: Sens. Arlen Specter, R-Pa., and Mary Landrieu, D-La.

Plus, Democratic Sen. Chuck Schumer and former Amb. Joe Wilson (search) on Thursday blasted opponents for drumming up a "smear campaign" against Wilson and his wife, Valerie Plame, a CIA officer whose identity was leaked to reporters.

The political flare-up over Bush Adviser Karl Rove: Rove's opponents take aim — but what does the law say? We'll ask Rep. Jane Harman, D-Calif.

And, powerful political punditry from Nina Easton, deputy Washington bureau chief for the Boston Globe, and our all star panel of FOX News contributors: Juan Williams of National Public Radio and Fred Barnes and Bill Kristol of the Weekly Standard.