[JURIST] The US Supreme Court announced Wednesday that Chief Justice William Rehnquist has returned to the court to work part-time, but it is as yet uncertain when or if he will actually return to the bench when the Court resumes hearing cases Monday. Rehnquist, 80, is undergoing cancer treatment and has already canceled a two-week course he was scheduled to teach in February at the University of Arizona College of Law (read a UA press release on the 2004 offering of the course). Friday January 7 marks the 33rd anniversary of Rehnquist's appointment to the high court. USA Today has more.