Ginsburg spent much of her legal career as an advocate for gender equality and women’s rights, winning many arguments before the Supreme Court. She advocated as a volunteer attorney for the American Civil Liberties Union and was a member of its board of directors and one of its general counsel in the 1970s. RUTH BADER GINSBURG FIGHT FOR THE THINGS YOU CARE ABOUT UGLY CHRISTMAS SWEATER In 1980, President Jimmy Carter appointed her to the U.S. Court of Appeals for the District of Columbia Circuit, where she served until her appointment to the Supreme Court in 1993. Between O’Connor’s retirement in 2006 and the appointment of Sonia Sotomayor in 2009, she was the only female justice on the Supreme Court. During that time, Ginsburg became more forceful with her dissents, notably in Ledbetter v. Goodyear Tire & Rubber Co. (2007). Ginsburg’s dissenting opinion was credited with inspiring the Lilly Ledbetter Fair Pay Act which was signed into law by President Barack Obama in 2009, making it easier for employees to win pay discrimination claims.