The former high school, college and NFL quarterback said he won't try to reclaim the commissioners job. The remaining commissioners are scheduled to accept his resignation Wednesday.
In 13 months on the job, Democratic commissioner voted for 33% tax hike to solve budget crisis and helped county Office of Youth and Family Services regain a full operating license.
The region was well-represented in Washington, D.C., for President Donald Trump's swearing-in, while others celebrated the historic moment closer to home.