Sen. John Cornyn, in his boilerplate remarks  about the “judicial activism” conservatives like to associate with Elena Kagan, attempted to throw the Solicitor General’s own words back at her. Kagan, Cornyn insisted, would not rely on the “Constitution ratified by the American people and the laws passed by Congress,” but rather that she would solve tensions “between her Constitutional values” using “her prudence and judgment.” (He demonstrated his contempt for “prudence” and “judgment” by spitting the words out in disgust).
This is what Kagan actually said, in a written response  to questions from Cornyn:
Question: In Confirmation Messes, Old and New, 62 U. Chi. L. Rev. 919, 932 (1995), you wrote that “many of the votes a Supreme Court Justice casts have little to do with technical legal ability and much to do with conceptions of value.”
a. Please explain in greater detail what you meant in this statement.
Response: I was referring to constitutional values, by which I mean the fundamental principles articulated and embodied in our Constitution. In some cases, constitutional values point in different directions, and judges must exercise prudence and judgment in resolving the tension between them. In doing so, judges must always look to legal sources—the text, structure, and history of the Constitution, as well as the Supreme Court’s precedents—not to their own personal values, political beliefs, or policy views.
Kagan wasn’t talking about tension in her own values—she was talking about the tension inherent in the values of the Constitution. For more on that point, Cornyn might want to read former Justice David Souter’s excellent explanation  of this principle, or even just sit down and read a few recent Supreme Court cases, which typically get to the Court precisely because they embody hard-to-resolve tensions between constitutional values.
He might also want to re-watch Kagan’s debunking of the John Roberts doctrine of the judge-as-umpire, in which she patiently explains that “judging requires judgment':