Yesterday, South Dakota Governor Kristi Noem signed Senate Bill 46 (full text) which prohibits transgender women from participating in women's sports teams or events in South Dakota schools and colleges. The ban includes intramural and club events as well as inter-school competitions. It also extends to any accredited school, not just to public schools; to events sponsored by any activities association or organization; and to colleges under control of the Board of Regents or Board of Technical Education. NBC News reports on the governor's action.