Allegan County’s Campbell assumes MAC presidency Written by micounties on September 15, 2014. Posted in Events Allegan County Commissioner Jon Campbell was sworn in this afternoon as the Michigan Association of Counties’ newest president. Tags: Allegan County, Jon Campbell, MAC, Michigan micounties This information box about the author only appears if the author has biographical information. Otherwise there is not author box shown. Follow YOOtheme on Twitter or read the blog.