WASHINGTON - MARCH 09:  U.S. President Barack Obama finishes signing an Executive Order on stem cell research at the White House March 9, 2009 in Washington, DC. By signing the order, Obama reverses a Bush administration policy restricting U.S funding for embryonic stem cell research that scientists hope will speed the search for cures to major illness. Getty Images logo Getty Images 8 months ago

WASHINGTON - MARCH 09: U.S. President Barack Obama finishes signing an Executive Order on stem cell research at the White House March 9, 2009 in Washington, DC. By signing the order, Obama reverses a Bush administration policy restricting U.S funding for embryonic stem cell research that scientists hope will speed the search for cures to major illness.