With the implementation of a new charter form of government, Mark was elected to serve as the first-ever County Executive of Macomb in 2011. He is credited with creating an award-winning marketing and branding campaign “Make Macomb Your Home” that has raised the profile of Macomb County across the region. In addition, he developed COMTEC – a state of the art, one of a kind communications and technology center that is home to emergency management, information technology, traffic operations and 911 dispatch. Mark was instrumental in creation of the Office of Public Defender, providing local indigent defense services to residents in need. County Executive Hackel also created the OneMacomb initiative focusing on multiculturalism and inclusion. He is committed to providing innovative leadership for the region while delivering services citizens and businesses expect.

Along with being County Executive of the State's third largest county, Mark is an adjunct faculty member at both Macomb Community College and Wayne State University where he shares his knowledge of the criminal justice system.

Mark is a lifelong resident of Macomb County. In his free time he enjoys working out, coaching youth sports and spending time with family and friends.