The Globe and Mail reports in its Monday, Sept. 24, edition that at least a dozen cannabis companies that operate in the United States are working toward listing on Canadian markets. The Globe's Andrew Willis and Christina Pellegrini write that the list includes Massachusetts-based Curaleaf, Harvest Enterprises of Arizona and Columbia Care and Acreage Holdings, both of New York. Most cannabis businesses are going public in Canada by way of a reverse takeover of a shell company that is already publicly listed, as the process is often quicker and easier. The new round of listings involves increasingly large offerings. The first listing is expected to come from Curaleaf, which operates 28 dispensaries, 12 cultivation sites and nine processing facilities. That legal conflict between federal and state law makes it difficult for most U.S.-based cannabis companies to list on federally regulated U.S. exchanges. So they are following the example of other American firms, such as MedMen Enterprises, a California-based company that runs 14 cannabis stores in three states and now sports a $2.5-billion market capitalization after listing in Canada in the spring.