Milwaukee Mayor Tom Barrett says he will back stem cell research just like Gov. Jim Doyle if heâ??s elected governor. Barrett says itâ??s wrong for opponents of embryonic stem cell research to suggest the work is unethical. Barrett says he will be a champion for stem cell research being done at the University of Wisconsin-Madison and will stand up to attempts by lawmakers to limit it. Barrett spoke after touring the Waisman Clinical Biomanufacturing Facility at the University of Wisconsin-Madison on Monday.