Sandra Day O'Connor (born March 26, 1930) is a retired United States Supreme Court justice, and in 2013 [https://www.nafta-sec-alena.org/Default.aspx?tabid=96&language=en-US was listed] as a NAFTA adjudicator. She served as an Associate Justice from her appointment in 1981 by Ronald Reagan until her retirement from the Court in 2006. She was the first woman to be appointed to the Court.
Prior to O'Connor's appointment to the Court, she was an elected official and judge in Arizona serving as the first female Majority Leader in the United States as the Republican leader in the Arizona Senate. On July 1, 2005, she announced her intention to retire effective upon the confirmation of a successor. Samuel Alito was nominated to take her seat in October 2005, and joined the Court on January 31, 2006.