That's MOE as in Maintenance of Effort.
Currently, public libraries in Wisconsin are able to continue to provide valuable services because of a legal requirement called Maintenance of Effort. In a nutshell, this means that in any given year, a library's funding must equal at least the average of its funding for the prior three years.
Scott Walker's recently unveiled budget will lift the Maintenance of Effort requirement. I don't have to tell you what this means for libraries. Enjoy them while you can... and maybe think about giving the governor a call to let him know what you think about this part of the state budget.