Overturning a law that doesn't exist?

Some may see it as a bizarre realignment of the starts, but I agree with the (conservative leaning) Detroit News' support of a Democratic initiative to eliminate the ban on stem cell research in Michigan. However, I have been unable to see such a ban in the laws. Currently, in Michigan there are tax incentives and other state benefits for biomedical research. By law, that excludes embryonic stem cells. I haven't seen anything which outright bans this research, however. Is this a situation similar to the Federal funding ban, where the research is allowed but public moneies can't go toward it? Or, is there a genuine, outright ban on embryonic stem cell research. If, indeed, this research is outright banned, we need to correct this immediately. If this is a mischaracterization and the ban is on state funding, well, that's a different situation all together.