Keloland Media Group Arguments on Amendment A Unfold in Front of South Dakota Supreme Court The voter-approved measure in favor of adult-use cannabis legalization was previously ruled unconstitutional by Circuit Judge Christina Klinger. Adult-use cannabis legalization remains uncertain in South Dakota, where the state’s Supreme Court heard arguments April 28 on the constitutionality of a voter-approved amendment from the November 2020 election. The court’s hearing stems from a lawsuit challenging the constitutionality of Amendment A, which passed with a 54.2% majority. The ballot measure read: “An amendment to the South Dakota Constitution to legalize, regulate and tax marijuana; and to require the legislature to pass laws regarding hemp as well as laws ensuring access to marijuana for medical use.”