Stem cell laws and policy in the United States
In May 2005, the House of Representatives voted 238-194 to loosen the limitations on federally funded embryonic stem-cell research — by allowing government-funded research on surplus frozen embryos from in vitro fertilization clinics to be used for stem cell research with the permission of donors — despite Bush's promise to veto if passed.  On July 29, 2005, Senate Majority Leader William H. Frist (R-TN), announced that he too favored loosening restrictions on federal funding of embryonic stem cell research. On July 18, 2006, the Senate passed three different bills concerning stem cell research. The Senate passed the first bill, 63-37, which would have made it legal for the Federal government to spend Federal money on embryonic stem cell research that uses embryos left over from "in vitro" fertilization procedures. On July 19, 2006 President Bush vetoed this bill. The second bill makes it illegal to create, grow, and abort fetuses for research purposes. The third bill would encourage research that would isolate pluripotent, i.e., embryonic-like, stem cells without the destruction of human embryos.
Political positions of Mitt Romney
When he ran for governor in 2002, Romney strongly advocated stem-cell research, and he promised to lobby then-President George W. Bush to embrace it. In 2007, Romney supported the use of stem cells obtained from "surplus embryos" for research, but opposed "the creation of new lines of human stem cells for research and vetoed a stem cell research bill as governor." During Romney's 2008 presidential campaign, he renounced his prior position and said that he agreed with Bush's decision to ban federal funding for research on excess embryos. He said that his views had been drastically altered in 2004 after discussing stem cell research with Douglas Melton, a stem cell researcher at Harvard University. The Harvard Stem Cell Institute was planning research that would have involved therapeutic cloning. According to Romney, Melton declared that the research "is not a moral issue because we kill the embryos at 14 days." "I looked over at Beth Myers, my chief of staff, and we both had exactly the same reaction, which is it just hit us hard," recalled Romney. "And as they walked out, I said, 'Beth, we have cheapened the sanctity of life by virtue of the "Roe v. Wade" mentality.'"