Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.11526e

Sec. 11526e. (1) Subject to subsection (3), a person shall not deliver for disposal, in a landfill or incinerator in this state, municipal solid waste, including, but not limited to, municipal solid waste incinerator ash, that was generated outside of the United States.

(2) Subject to subsection (3), the owner or operator of a landfill or incinerator in this state shall not accept for disposal municipal solid waste, including, but not limited to, municipal solid waste incinerator ash, that was generated outside of the United States.

(3) Subsections (1) and (2) apply notwithstanding any other provision of this part. However, subsections (1) and (2) do not apply unless congress enacts legislation under clause 3 of section 8 of article I of the constitution of the United States authorizing such prohibitions. Subsections (1) and (2) do not apply until 90 days after the effective date of such federal legislation or 90 days after the effective date of the amendatory act that added this section, whichever is later.