President-elect Barack Obama is expected to lift restrictions on federal money for such research. House Speaker Nancy Pelosi, D-Calif., also has expressed interest in going ahead with legislation in the first 100 days of the new Congress if it still is necessary to set up a regulatory framework.

John Podesta, head of Obama's transition team, strongly hinted that the president-elect would deal with stem cell research soon after taking office Jan. 20. "As you know, he has said something specific about stem cell research, so I think you can expect that what he said in the campaign will be fulfilled once in office," Podesta said.

Obama made it clear during the campaign he would overturn Bush's directive.

"As president, I will lift the current administration's ban on federal funding of research on embryonic stem cell lines created after August 9, 2001, through executive order, and I will ensure that all research on stem cells is conducted ethically and with rigorous oversight," he said.