Supreme Court nominee Elena Kagan is telling senators she'll do her best to consider cases impartially and with judicial humility, as she begins Judiciary Committee hearings facing Republicans charges that she'd let her political views color her decisions as a justice. "I will do my best to consider every case impartially, modestly, with commitment to principle, and in accordance with law," Kagan plans to tell senators as she heads into a marathon week of high-pressure vetting before the Judiciary panel, pressing to portray herself as a mainstream addition to the court.