On 20 January 2001, Republican

On 20 November 2009 Democrat Barack Obama replaced Republican George W. Bush as president of the United States. Obama soon initiated changes to Bush’s 2001 executive order concerning scientific research involving human

On 9 August 2001, US President George W. Bush gave an eleven-minute speech from his ranch in Crawford, Texas, on the ethics and fate of US federal funding for stem cell research. The speech is available at