That’s a great question. According to Weedmaps, it does look like Obama Kush may have originated in MI:

“Obama Kush, like many strains, has mysterious origins. Online sources think Michigan’s Superior Genetics may have crossed a Skunk hybrid mother plant with an Afghani x OG Kush dad to get Obama Kush.”

I wish there was a book or resource that better outlined geographic origins of strains. I know of the Pure Michigan, Yooper Cookies, Paul Bunyan (which is a cross of the last 2)

Runtz came from LA but Michigan folks go crazy for it.