While working for Vine, McCann was elected to the Kalamazoo City Commission and served five two-year terms. As a commissioner, he worked on the clean-up of the Kalamazoo River, revitalization of Downtown Kalamazoo, fostering the community's economic development and strengthening its public safety. McCann was proud to help enact Kalamazoo's Human Rights Ordinance and received the commission's 2009 Dedication & Service Award. During this time, he worked for the American Red Cross of Southwest Michigan, where he supported families affected by disasters, provided service to members of the armed forces and assisted with blood collection drives.

In 2010, McCann was elected to serve the City of Kalamazoo, Kalamazoo Township, City of Parchment and Cooper Township as the 60th District State Representative. During this time, he was a member of the Appropriations Committee. McCann proudly voted to expand health insurance to over 600,000 Michiganians and raise Michigan's minimum wage. He also voted against stripping collective bargaining rights from working families and fought for high quality public education from early childhood and K-12 to higher education and trade schools. Additionally, McCann proposed legislation to end the practice of "gerrymandering" by establishing an independent citizen redistricting committee.

Since taking office as Senator for the 20th District in January 2019, McCann has introduced legislation that would safeguard our water, reform our elections, and protect workers' wages and health. He serves on the Senate Committee on Appropriations, Senate Committee on Energy & Technology, and Senate Committee on Natural Resources.

Senate Committee on Appropriations Subcommittee on Agriculture and Rural Development Subcommittee on Capital Outlay Subcommittee on Natural Resources and Environment, Great Lakes and Energy Senate Committee on Energy & Technology Senate Committee on Natural Resources Before returning to the legislature, McCann worked as executive director of Kalamazoo Friends of Recreation, supporting local recreation programs and leading efforts to improve city parks.

McCann has served on many boards and committees in his community. He is a member of the Northside Ministerial Alliance and a board member for Prevention Works, in addition to holding a lifetime membership with the NAACP.

He earned a bachelor's degree in political science from Western Michigan University. He also is a graduate of the Michigan Political Leadership Program.

McCann lives in Kalamazoo with his wife, Priscilla Lambert, and their two children, Alex and Lauren.