More than 900 cities in the United States currently have some form of breed-specific legislation.
See bans and restrictions in your state at https://www.dogsbite.org/legislating-dangerous-dogs-state-by-state.php
In 2009, the U.S. Army and U.S. Marine Corps banned dangerous dog breeds from privatized housing domestically and abroad. In 2012, the U.S. Air Force enacted a similar uniform policy.
See US military reguslations at https://www.dogsbite.org/legislating-dangerous-dogs-military-bases.php