Today's announcement that liberal Justice John Paul Stevens (in photo) will retire from the U.S. Supreme Court this summer is sure to fuel the nation's partisanship. Stevens was among the justices to have been unanimously confirmed by the Senate, but his replacement's nomination fight could make last summer's bitter confirmation of Justice Sonia Sotomayor look fun. President Obama should take the advice of Sen. Sam Brownback, R-Kan., and consult "with senators on both sides of the aisle before selecting a nominee." Brownback and Sen. Pat Roberts, R-Kan., should reserve judgment on that nominee until after Senate confirmation hearings. Last year, Roberts and Brownback were two of the first three senators to declare, weeks in advance of the hearings, that they'd vote against Sotomayor.