Des Moines Public Schools custodian Tracy Harris cleans a chair in a classroom at Brubaker Elementary School, Wednesday, July 8, 2020, in Des Moines, Iowa. School districts that plan to reopen classrooms in the fall are wrestling with whether to require teachers and students to wear face masks. In Iowa, among other places, where Democratic-leaning cities like Des Moines and Iowa City have required masks to curb the spread of the coronavirus, while smaller, more conservative communities have left the decision to parents. (AP Photo/Charlie Neibergall)