Mich. Comp. Laws § 3.906
There are reserved over these lands, described in section 1, to which legislative jurisdiction may be ceded to the United States pursuant to this act, the state's entire legislative jurisdiction with respect to taxation and that of each state agency, political subdivision and district of the state; the state's entire legislative jurisdiction with respect to marriage, divorce, annulment, adoption, commitment of the mentally incompetent, and descent and distribution of property; concurrent or separate power to enforce the criminal law; and the power to execute any process, civil or criminal, issued under authority of the state. A person residing on these lands described in section 1 shall not be deprived of any civil or political rights, including the right of suffrage, by reason of the cession of jurisdiction to the United States.
MCL 3.906