 did michigan make a 1000000000 mistake  whether the state of michigan will owe over 1 billion plus to out of state businesses will be decided soon by the michigan supreme court to read more on why the state of michigan may be on the hook for over 1 billion dollars go online at  http wwwdetroitnewscom article 20140808 politics023080800490 politics officialscorporatetaxcasecouldcostmichigan11b 