Versions of Michigan Laws 4.20 - Repeal on LawServer 2023 Michigan Laws 4.20 – Repeal 2022 Michigan Laws 4.20 – Repeal 2020 Michigan Laws 4.20 – Repeal 2019 Michigan Laws 4.20 – Repeal 2017 Michigan Laws 4.20 – Repeal 2016 Michigan Laws 4.20 – Repeal 2015 Michigan Laws 4.20 – Repeal 2014 Michigan Laws 4.20 – Repeal 2013 Michigan Laws 4.20 – Repeal 2009 Michigan Laws 4.20 – Repeal