Spoon have cancelled a US show in Iowa as a result of the state’s lack of a vaccine mandate.The group were due to perform at Iowa’s Des Moines’ Hoyt Sherman Place on September 9, but in a post on their Instagram account yesterday (August 22), a statement revealed that the event has now been cancelled.Iowa is one of 20 Republican states in US which this year banned proof of COVID-19 vaccination requirements by businesses or government entities.The statement read: “In just two weeks we’ll be