Clinton left office with the highest end-of-office approval rating of any U.S. president since World War II. Since then, he has been involved in public speaking and humanitarian work. Based on his philanthropic worldview, Clinton created the William J. Clinton Foundation to promote and address international causes such as treatment and prevention of HIV/AIDS and global warming.
In 2004, he released his autobiography My Life, and was involved in his wife Hillary's 2008 presidential campaign and subsequently in that of President Barack Obama. In 2009, he was named United Nations Special Envoy to Haiti. In the aftermath of the 2010 Haiti earthquake, Clinton teamed with George W. Bush to form the Clinton Bush Haiti Fund.