[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/POLITICS/03/09/obama.science/art.stem.cell.gi.jpg caption="President Obama lifted a ban that limited federally funded embryonic stem cell research."]
(CNN) - As President Obama reversed the Bush administration's limits on embryonic stem-cell research, he said scientific decisions must be "based on facts, not ideology."
The president on Monday signaled a clear shift in tone from the Bush administration on a broad range of scientific issues.
Obama overturned an order signed by President Bush in 2001 that barred the National Institutes of Health from funding research on embryonic stem cells beyond using 60 cell lines that existed at that time.
Bush twice vetoed legislation that would have expanded federally funded embryonic stem cell research. Those siding with Bush say scientific advances allow researchers to conduct groundbreaking research without destroying human embryos.
"Advancements in science and research have moved faster than the debates among politicians in Washington, D.C., and breakthroughs announced in recent years confirm the full potential of stem cell research can be realized without the destruction of living human embryos," House Minority Leader John Boehner, R-Ohio, said Sunday.
Obama also signed a memorandum that directs the White House Office of Science and Technology Policy "to develop a strategy for restoring scientific integrity to government decision-making."
Obama's action is part of a broader effort to separate science and politics and "restore scientific integrity in governmental decision-making," White House domestic policy adviser Melody Barnes said Sunday.
But it's not just on the issue of stem cells where science and politics collide.