On March 9, 2009, President Barack Obama signed an executive order to lift a ban on federal funding for embryonic stem cell research that had been in place since August, 2001. In this video, Susan Fisher, director of the UCSF Human Embryonic Stem Cell Center, and Alan Trounson, president of the California Institute for Regenerative Medicine, discuss how the federal ban affected stem cell researchers and how President Obama's stem cell research policies will bring new opportunities in this field.