Gov. Kristi Noem sent letters Friday to the leaders of both the Oglala Sioux Tribe and the Cheyenne River Sioux Tribe demanding that checkpoints designed to prevent the spread of coronavirus on tribal land be removed, the governor's office said in a statement. According to Cheyenne River Sioux Tribe checkpoint policies posted on its social media, its reservation residents may travel within South Dakota to areas the state has not deemed a Covid-19 "hotspot" if it's for an essential activity such as medical appointments or to get supplies unavailable on the reservation. But they must complete a health questionnaire when...