What is the current state of the law on pit bull legislation in the United States?

There is one American case, however, in which a court has upheld a challenge to the legislation. That is the case of Toledo v. Tellings. The City of Toledo’s ordinance regulated the ownership or vicious dogs. Vicious dogs were defined to include a dog that “(b)elongs to a breed that is commonly known as a pit bull dog”. The court distinguished previous cases on the basis that they relied on “…now outdated information which perpetuated a stereotypical image of pit bulls” (at para. 63).