Ohio’s largest manufacturing trade group thinks legalizing recreational marijuana would lead to higher business costs and more workplace injuries. The Ohio Manufacturers Association voiced its opposition to Issue 2, a proposed constitutional amendment on the November ballot that would make recreational marijuana legal, saying it would harm the manufacturing industry across the state. Issue 2 would legalize the growing, manufacturing and sale of marijuana for recreational use for those 21 and older. It would also add a 10% tax on the sale and limit the number of plants per person to 12. If passed by a simple majority of voters, Ohio would become the 24th state to legalize recreational marijuana use.