NEW : White House adviser : As part of effort to balance politics , science . Bush - era policy on embryonic stem cell research to be reversed But because work on embryonic stem cells involves the destruction of human embryos , many conservatives supported the limits , officials say . President 's expected focus on stem cells distracting from economy , Cantor says . Rep. Cantor , R - NJ , also says policy reversal could lead to embryo destruction .
NEW : White House adviser : As part of effort to balance politics , science . Bush - era policy on embryonic stem cell research to be reversed , officials say . President 's expected focus on stem cells distracting from economy , Cantor says . Rep. Cantor , R - NJ , also says policy reversal could lead to embryo destruction .