I am glad that Jeff Jacoby had the intellectual integrity to include Justices John Roberts and Samuel Alito as candidates for the Supreme Court who did not reveal their positions during their Senate confirmation hearings (Kabuki and Judge Sotomayor, Boston Globe, July 15. 2009).
However this was really only a concern with chief Justice Roberts. Both Judge Alito and Judge Sotomayor had many years on the Appeal Courts and revealed their positions clearly in the decisions that they wrote.
By all accounts Judge Sotomayor is a careful jurist who writes narrowly drawn legal opinions. There is no need for the Senate to carry out an inquisition into her positions. They are clearly stated in her record.