"With certain restrictions, the President has announced that federal funds may be used to conduct research on human embryonic stem cells. Federal research is limited to 64 existing stem cell lines that were derived (1) with the informed consent of the donors; (2) from excess embryos created solely for reproductive purposes; and (3) without any financial inducements to the donors. No federal funds will be used for the derivation or use of stem cell lines derived from newly destroyed embryos; the creation of any human embryos for research purposes; or cloning of human embryos for any purposes. Several lawsuits have been filed relating to stem cell research, and questions have been raised concerning access to existing stem cell lines by federal researchers."
CRS Report for Congress, RS21044
U.S. Department of State: http://www.state.gov/