A Wisconsin public school district is banning clothing that displays sports teams with American Indian mascots.

The school board in Wisconsin's capital city of Madison unanimously approved a policy last month that one national group says may be a national first.

The ban prohibits students from wearing clothing that shows the name, logo or mascot of any team that portrays a negative stereotype of American Indians.

Students who wear such clothing items would have to change it or face suspension or expulsion.

Supporters say the policy will make American Indian students feel more comfortable in school. But opponents say the policy infringes on free speech.